331 Matching Annotations
  1. Last 7 days
    1. For example, Joss et al. presented a classroom activity for predicting the normal boiling point of organic compounds using multivariate linear regression and artificial neural networks, two typical machine learning algorithms. (21) In turn, Antonelli et al. generated a lab activity for multivariate calibration using partial least-squares regression on the programing language R. (22) These hands-on experiences are a valuable asset for incorporating computational skills via the exposition of new tools to solve relevant problems in chemistry and, by doing so, to promote collaborative work and the democratization of knowledge. (13)Several general courses consisting of one or two sessions have been implemented before, including programming, data visualization, and machine learning, among others topics. As an example, The Carpentries, (23) a project focused on teaching computing skills to researchers, has hosted a number of such courses. Another important organization is the Molecular Sciences Software Institute (MolSSI), which has organized several computational chemistry-related courses. (24

      Resources for teaching cheminformatics

  2. Feb 2024
    1. Next, please log in to your Adafruit account and create a quote using the wishlist tool. Save the quote as a PDF and provide it to your school or institution to use as the basis for the official purchase order document. Once you have an official purchase order document, please move the items in your wishlist to your cart and proceed to checkout, selecting “Purchase Order - Check” as the payment option. After you place your order online, please send your official purchase order document along with your Adafruit order number to support@adafruit.com. This is the fastest way to get your PO processed and will reduce errors and delays.

      Here are instructions, I will redo the wishlist as some of the items are no longer present

    1. 5V Pin / VBUSThe Nano ESP32 is the first board to not feature a 5V pin. It has instead been replaced with VBUS, which is a more accurate description of the pin's capabilities.VBUS provides 5 V whenever powered via USB. If powered via the VIN pin, it is disabled. This means that while powering the board through the VIN pin, you can't get 5 V from the board, and you need to use a logic level shifter or an external 5 V power supply.

      It looks like the VBUS will not work if we do not run by USB.

  3. Jan 2024
    1. Mosaic was the first browser to explore the concept of collaborative annotation in 1993[2

      her is some evidence that I am being honest

    1. text in draw.io diagrams


      I opened the image in Youtube and then under share link I choose the start at time ootion. Please note the three tags I added. Note, once you have created the required tag of physical-computing it will auotcomplete. Also, you need to hit enter after you type in each tag, be sure to check the tags got added, as you are being graded on your ability to tag web content.

    1. Visual Studio Code has integrated source control management (SCM) and includes Git support out-of-the-box. Many other source control providers are available through extensions on the VS Code Marketplace

      This is an excellent resource for learing about Git integration with VS Code

  4. Dec 2023
    1. Analog Pins (Pins A0-A06) - The 7 analog pins are used to emasure analog voltage in the range 0- 3.3V with a resolution of 10 bit.

      I believe this is saying the input from a MQ sensor needs to be dropped down from 5 V to 3.3 V like we did with the ADC converts when using the Raspberry Pi, and you ran 5 V in here.

  5. Oct 2023
    1. Academic Technology and Computing Committee: This committee shall be concerned with University computing services policies that affect academic programs and the general interest of UALR. This committee serves as a formal communication channel for the faculty and students with Information Technology Services. The Vice Chancellor of Information Services shall keep the committee informed on issues, policies, and resource allocations affecting the academic community via technology and computing at the university level. On an annual basis the committee shall review Information Technology Services’ policies as they affect the academic community. This review should include examining the impact of resource allocation of new technology to the learning process in a benefit/cost framework. In addition, the committee will consult with the Vice Chancellor of Information Services concerning budgets, both current and future, projected and actual expenditures. The committee shall furnish a report of their review and budget conference to the Faculty Senate by March 15 of each year. The Academic Technology and Computing Committee shall be composed of one library faculty and three full-time faculty members from each college appointed to two year staggered terms by the Committee on Committees. In addition, two students shall be named by the Student Government Association to serve one year terms. The Vice Chancellor of Information Services and the executive vice chancellor and provost or their designees shall serve as ex officio members without vote. Any faculty member holding a position of “faculty in residence” within Information Technology Services may serve as a voting committee member during their appointment to such post.

      Is this the only mission statement?

  6. Sep 2023
    1. 2) ask students to create usernames that contains a variation of their UA Little Rock username or name as it appears on the consent form so we can track student who choose or cho

      this is not possible as the students have already created usernames

    1. water quality objectives for the end uses. In the case of a potable water supply, water is treated to minimize the risk of infectious disease transmission, the risk of non-infectious illness, and to create a palatable water flavor. Water distribution systems[22][23] are designed and built to provide adequate water pressure and flow rates to meet various end-user needs such as domestic use, fire suppression, and irrigation. Wastewater treatment

      check this

  7. Aug 2023
    1. e this in the following table for the reaction, where A, B and C are reactants, and the order of reaction is m for A, n for B and p for C, with an overall order ΘΘ\Theta= m+n+p

      test for incognito

    1. r negative end of a dipole) approached a neutral molecule, the opposite would occur, as it would repel electrons, inducing a positive dipole in the neutral molecule that is near it,


    1. l, 98.89% of the carbon atoms also contain 6 neutrons, so each has a mass number of 12. An isotope of any element can be uniquely represented as AZX, where X is the atomic symbol of the element, A is the mass number and Z is the atomic number. The isotope of carbon that has 6 neutrons is therefore 126C. The subscript indicating the atomic number is actually redundant because the atomic symbol already uniquely specifies Z. Consequently, it is more often written as 12C, which is written as “carbon-12,”  (14C, would thus be written as “carbon-14.”) Nevertheless, the value of Z is commonly included in the notation for nuclear reaction


    1. But there is another goal for safety, and this deals with safety literacy in the digital age, that is, in this age of instant information, where people can post false claims online, it is important that students develop the skills to evaluate chemical safety information.

      We added chemical literacy

    1. second is to develop the proper protocols and procedures for performing experimental activities so that when the student enters advanced courses or the work force, t

      What we will see is we added safety literacy in the post pandemic description

    1. e of tax deductions and tax credits. The Alternative Minimum Tax w

      check this out

    1. First, let's get a list of SIDs that are associated CID 1174 (uracil)

      the following python code gets you the number of substance IDs that are associated with a compound ID within PubChem

  8. Jul 2023
    1. tion, the orbitals associated with the group in conjugation with the dienophile double-bond overlap with the interior orbitals of the diene, a situation that is possible only for the endo transition state. Although the original explanation only invoked the orbital on the atom α to the dienophile double bond, Salem and Houk have subsequently proposed that orbitals on the α and β carbons both participate when molecular geometry allows.[25]


    1. Discuss how you will identify additional areas of expertise that may be needed
    2. Phase 1 Full Proposals

      Full Proposal instructions

    3. Letters of Intent (required):

      Letter of Intent

    4. Broadening Participation Plan (under Broader Impacts) that describes activities that will be undertaken to include the participation of the full spectrum of diverse talent in STEM

      Broader Impact statement



    6. Convergence Research

      We need a bearing on what Convergence Research is

    7. Track L: Real-World Chemical Sensing Applications

      Description of chemical sensing track

  9. Jun 2023
    1. The InChI OER is an Open Education Resource (OER) devoted to the use of InChI, the International Chemical Identifier.  Chemical nomenclature underpins chemical communication and with its release in 2005, the InChI initiative of the International Union of Pure a

      Rewrite to make more useful for first time users of InChI, and maybe have an example of a classroom application.

      We need to introduce the OER with a classrooom appliation

  10. Feb 2023
    1. , an arithmetic operator in Python is not a function. An arithmetic operator is a symbol that performs

      test. I am trying to see if we can cite chapgpt through hypothes.is annotations.

  11. Jan 2023
    1. The resume for each individual must not exceed twoconsecutively numbered (bottom center), 8.5x11-

      2 page CV

    2. Relevancy Review

      If you make it through first stage you get a relevancy review

    3. All eligible grant applications will be peer reviewed by an external peer review panel based onthe criteria below. Each of the four criteria categories are equally weighted

      Review Criteria Application Quality Alignment with P3 Educational and interdisciplinary aspects Budget and project Management

    4. Letters of Intent/Letters of Support

      letters of intent/support

    5. Budget Justification

      budget Justification

    6. Scientific Data Management Plan (2 pages)

      Scientific DMP

    7. Project Narrative, su

      project narrative 2 page abstract and required information

    8. Research Plan

      12 page research plan

    9. SF-424A Budget Information - Non-Construction Programs

      Budget forms

    10. Standard Form 424
    11. All applications must include a Human Subjects ResearchStatement (

      Human Subject Research Statement

    12. Applicants will also be asked toprovide past performance information on whether journal publications or associated authormanuscripts, and the associated underlying scientific research data and metadata

      prior art

    13. ncement shall include a Scientific Data ManagementPlan (SDMP) that addresses public access to EPA-funded scientific research data.

      data management plan

    14. Research applications mustinclude a discussion on how the proposed research will seek sustainable solutions that protect theenvironment and strengthen our communities

      Disucssionb of innovation and sustainability, which is required

    15. “output” means an environmental activity, effort, and/or associatedwork products related to an environmental goal or objective, that will be produced or providedover a period of time or by a specified date. The term “outcome” means the result, effect, orconsequence that will occur from carrying out an environmental program or activity that isrelated to an environmental or programmatic goal or objective

      Difference between output and outcome

    16. e. Generally, a projectmust address the causes, effects, extent, prevention, reduction and elimination of air pollution,water pollution, solid/hazardous waste pollution, toxic substances control or pesticide controldepending on which statute(s) is listed above

      range of p3 grants

    17. . These outputs can be presented in publications, at the P3 Expo, andconferences.

      P3 outputs

    18. pplicants must address one of the research areas listed below in their applications. Note thateach application must be submitted using a single Funding Opportunity Number (FON).

      Must approach one of these, Clean and Healthy Air (Funding Opportunity Number: EPA-G2023-P3-Q1)

      We must identify a single FON

    19. Goal 4: Ensure Clean and Healthy Air for All Communities,• Objective 4.1: Improve Air Quality and Reduce Localized Pollution and HealthImpacts

      Goal 4 of EPA-G2023-P3-Q1

    20. EPA also requires that grant applicants adequately describe environmental outputs and outcomesto be achieved under assistance agreements

      required outcomes

    21. his is accomplished in part by supporting the development and demonstration ofemerging technologies. The pr

      support of emerging technologies

    22. P3 projects shouldengage and educate the next generation of scientists, engineers, and the greater academic andexternal communities in understanding an

      engaging students

    23. differing departments collaborate. P3 encourages diverse, interdisciplinary teamsrepresenting a broad set of perspectives and ideas. Each student team must include a facultyadvisor, t

      diverse teams

    24. ’s structure has been modified to emphasize andstrengthen its focus on innovation and increase the number of teams that can advance theirdesign concepts to the demonstration stage.
    25. he program challenges and empowers interdisciplinary student teams totransform their classroom learning into hands-on experience by designing and demonstratingtangible solutions to real-world environmental issues in their communities

      description of the purpose of P3

    26. A STEM education ecosystem consists of partners united by acollective vision of supporting

      stem ecosystem

    1. uploaded over 2,480,340 3D models

      Here are the number of hits on thingivers

    1. how to use low-cost sensors to provide real-time, local-scale air quality information. EPA and state and local agencies face persistent challenges meeting such air quality information needs, including challenges in understanding the performance of low-cost sensors.

      GAO statement on low cost senstors

    1. ince September 17, the extens

      HoLU sensor kits, some dutch talk about calibration that needs to be translated, but seems to confuse collocation correction with calibration

    1. Sensor technology is getting cheaper and better. Sensors to measure air quality are also

      second version of dutch HOLU-kit

    1. f you have a sensor kit from Hollandse Luchten, we urge you to disconnect the humidity meter. We recently found out that the humidity

      They quit using these HoLu kits as the data was unrealiable. Here they were removing the humidity sensor as it was causing some problems

    1. ost commercially available sensors are expensive, and cannot be altered orextended to accommodate your specific data collection needs. In open hardware

      open hardware approach (2018) from Waag group

    1. oin the Fablab Network, an international movement in personal fabricatio

      International fabrication lab network

    1. These ‘HoLu kits’ are being distributed in pilots to residents who live in regions where the air quality is poor, such as around the Tata steel factory in the IJmond area. We teach citizens to measure the surrounding air quality and to interpret the data.

      Smart Citizen Lab aspart of Waag.

      pay attention to the HoLu project

    1. but EPAs and citizen science project leaders needto address issues of data quality and sensor calibration

      issue of Data Quality and sensor calibration

    2. he RIVM and the DutchMinistry for Infrastructure and the Environment (responsible for air qual-ity in the Netherlands) agreed to start a programme to innovate itsnational air quality measurement network (LML)

      RIVM is the Dutch Institure for Public Healrh and Environment and became involved with citizen scientce AQ projects in 2012

  12. watermark.silverchair.com watermark.silverchair.com
    1. from in situ sensors.

      use the term "in situ sensor", which means "in original place"

    1. for making, learning, exploringand sharing technologies. Open to a diverse community (from kids to bud-ding entrepreneurs), makerspaces seek to provide hands-on learning,support community interests and creative expression, and foster criticalthinking, particularly linked to STEM education

      description of Makerspace in relation to citizen science

    2. Different types of technologies and supporting resources usedin citizen science

      a table of citizen science technologies

    3. explicit (whencitizens collect the data themselves) or implicit (when contributors sharegeolocated photographs, videos or messages on social media

      explicit vs. implicit data collection

    4. This is followed by a discussion of how keytechnological developments have created and expanded opportunities forcitizen participation. T

      importance of expanding opportunities

    5. Such data collection generally followed apaper-based approach, with volunteers either systematically recordingobservations or individually sending evidence such as photographs orspecimens to professional scientists, along with key metadata such asobservation time and location

      traditional citizen science paradigm

    1. In OOP, objects are used to represent real-world entities, and the methods (i.e., functions) and attributes (i.e., v

      this is a test to see if hypothes.is works on ChatGPt

  13. Dec 2022
    1. Project description sensortoolkit - Air Sensor Data Analysis Library

      EPA sensor toolkit read the docs with python code

    1. It is a standard practice to test 3 or more identicalsensors at the same time because

      use of three sensors

    2. , the U.S.EPA published reports (hereincalled ‘Targets Reports’) thatprovide recommendations on howto evaluate air sensors thatmeasure criteria pollutan

      EPA target reports

    3. Developing correction algorithms is an activeresearch area with new approaches andmethods likely to evolve over time.

      EPA considers this research

    4. The collocation results can be used to correct the sensor data to more closely match thedata from the reference instrument. This correction process helps account for known biasand unknown interferences from weather and other pollutants and is typically done bydeveloping an algorithm. An algorithm can be a simple equation or more sophisticatedprocess (e.g., set of rules, machine learning) that is applied to the sensor data. This sectionfurther discusses the process of correcting sensor data

      correction factors for collocated sensors using ML

    5. deally, sensors would be setupwithin about 20 meters of horizontal distance and 1 meter or vertical distance from thereference instrument.

      collocation specs 20 meter horizontal 1 m vertical

    6. Collocation-Correctionprocess

      collocation/correction process

    7. This can be accomplished by collocating all air sensors to evaluate theprecision and bias of each air sensor’s data and

      colocation stuff

    8. For solar-powered devices, users should consult themanufacturer to ensure proper sizing of the solar components for the device and theavailable sunlight at the monitoring location (e.g., latitude, longitude, season) andinformation about proper placement, orientation, and maintenance.

      SOLAR POWER SPECS is important

  14. Nov 2022
  15. Aug 2022
    1. In essence the vapor pressure above a liquid represents the partitioning of the particles between two phases, the liquid and the gas, that is, there is a fraction of the particles in each phase. There is an interplay between the enthalpy of vaporization (the higher it is, the more they want to be in the liquid phase) and the kinetic energy. The equation that describes this is the Clausius-Clapeyron, which is an exponential function. Like any exponential function, there are two forms, the exponential form, and the natural log form 

      I have students highlighting Latex, and this is showing

    1. resources of perlite existing in Armenia amount to 150 million m3, whereas the total amount of projected resources re


    1. Laptops for Semester Checkout The library has a limited number of laptops available for students to check out for the entire semester. These laptops are available to students on a first-come, first-served basis and may only be approved for check out after discussing needs and resources with a UA Little Rock Care Team member.

      Students, This is a hypothes.is annotation link to the student laptop checkout service. If you do not have a laptop, please click this link, contact the CARE services, and see if you can get one.

  16. Jul 2022
    1. structuring or classification of folksonomy is termed folksontology.[28] This branch of ontology deals with the intersection between highly structured taxonomies or hierarchies and loosely structured folksonomy, asking what best features can be taken by both for a system of classification. The strength of flat-tagging schemes is their ability to relate one item to others like it. Folksonomy allows large disparat


    1. The coordinator node also changed from a first version to a last one but all of them have thesame architecture

      Emna, Can you explain this?


    1. One must be able to add one's own private links to and from public information. One must also be able to annotate links, as well as nodes, privately.

      Annotations were part of the earliest vision of the World Wide Web

    1. 443. InChI OER. R.E. Belford, J. Cuadros, A.P. Cornell, T. Gupta, E.C. Bucholtz

      Abstract: This poster will describe an Open Education Resource, the InChI OER (https://www.inchi-trust.org/oer/), designed to help chemists, educators and students find information on, and applications of, the IUPAC International Chemical Identifier (InChI). InChI is a machine readable semantic identifier based on layered line notation for the representation of chemical structure, which with the InChI key represents a new digital nomenclature enabling a wide variety of 21st century semantic web applications and activities that support the practice of chemistry.

      We will present OER content within the Intercollegiate Cheminformatics section of the LibreTexts hyperlibrary on the use of both InChI and the InChI OER, along with an overview of the working groups of the InChI subcommittee of IUPAC Division VIII; Chemical Nomenclature and Structure Representation.

      Although this poster will cover the InChI line notation and the use of the InChI OER to obtain resources on InChI, our goal is to elicit discussion on the evolution of the practice of an empirical science like chemistry, and the role data science should play in the traditional undergraduate curriculum

  17. Mar 2022
    1. continuous shape measure

      CShM - Continuous Shape Measure

    2. Other learning goals which ar

      learning goals

    3. ocus on applying the method to explore three symmetry-related phenomena – molecular distortion paths, protein structure and chirality.

      three activities focused on, molecular distortion paths, protein structure and chirality

    4. continuous symmetry measures (CSMs)

      Continuous Symmertry Measures (CSM). Made symmetry measureable


    1. he following January, with 99.94 percent officially listed as voting "yes".[94] Napoleon's brother, Lucien, had falsified the returns to show that 3 million people had participated in the plebiscite. The real number was 1.5 million.[93] Political observers at the time assumed the eligible French voting public numbered about 5 million people, so the regime artificially doubled the participation rate to indicate popular enthusiasm for the consulate.[93] In the first few months of the consulate, with war in Europe still raging and internal instability still plaguing the country, Napoleon's grip on power remained very tenuous.[95] In the spring of 1800, Napoleon and his troops crossed the Swiss Alps into Italy, aiming to surprise the Austrian armies that had reoccupied the peninsula when Napoleon was still in Egypt.[f] After a difficult crossing over the Alps, the French army entered the plains of Northern Italy virtually unopposed.[97] While one French army approached from the north, the Austrians were busy with another stationed in Genoa, which was besieged by a substantial force. The fierce resistance of this French army, under André Masséna, gave the northern force some time to carry out their operations with little interference.[98] The Battle of Marengo was Napoleon's first great victory as head of state. After spending several days looking for each other, the two armies collided at the Battle of Marengo on 14 June. General Melas had a numerical advantage, fielding about 30,000 Austrian soldiers while Napoleon commanded 24,000 French troops.[99] The battle began favourably for the Austrians as their initial attack surprised the French and gradually drove them back. Melas stated that he had won the battle and retired to his headquarters around 3 pm, leaving his subordinates in charge of pursuing the French.[100] The French lines never broke during their tactical retreat. Napoleon constantly rode out among the troops urging them to stand and fight.[101] Late in the afternoon, a full division under Desaix arrived on the


  18. Feb 2022
    1. A node may have several applications running on it (several sensors) each of which is an application. These application instances on a node are said to be endpoints, where messages can originate and terminate.

      I think here we are calling sensors/acuators/transducers as "applications". But this may be saying that the endpoint is where the data comes from, and not the hardware device. The question is, can application endpoints be at coordinator and router devices?

  19. Jan 2022
    1. In python there is no character data type, a character is a string of length one. It is represented by str class.

      This appears to say there is no chracter data type in python

  20. Dec 2021
    1. We will use the terms “leading,” “trailing,” and “captive” for the zeros and will consider how to deal with them.

      leading zeros are before a nonzero and trailing after, so 0.0001 has 3 leading zeros and no trailing zero, thus having one significant digit

    1. achieve excellence in U.S. science, mathematics, engineering, and technology education at all levels. The core strategies NSF staff employ include developing intellectual capital, strengthening the physical infrastructure, integrating research and education, and promoting partnerships.

      broader participation?

  21. Sep 2021
    1. The watt balance is predicated on an even more troublesome artifact.

      Issues with the Watt Balance

    1. Do you want to be the master or the servant?

      dash indicates a file while the d represents directory r-read w-write x-executable

      other is like a web server, so r is readable for people accesssing data through a webserver.

  22. Aug 2021
    1. Arkansas law prohibits the use of a hand-held cell phone for texting, typing, email or accessing the internet while driving, regardless of the driver's age.

      If I read this right, accessing the internet while driving is illegal in the state of Arkansas.

    1. 2.6. Types of Bonds and the Ketelaar Triangle

      I highlighted the entire title and hopefully this link goes to this specific video (sometimes it just goes to YouTube). I then right clicked at a specific time and pasted the URL into this textbox, and that allows me to share the video at a time I am interested in. https://youtu.be/OB0Ki50WkWk?t=370 I then used the tag of my LibreText page (which must be public) to aggregate it (f21c1403c11) on the chapter summary page. (This feature is only available on the first page of each chapter, which has links to all the topics of the chapter)

  23. Jul 2021
    1. annotation you can easily find it by going to your homepage in hypothes.is and then filtering by tags.  So you may want to make tags like "exam 1", or "nomenclature".  If you then filter with your hypothes.is user name and exam 1, you see those items you tagged (see video 11\PageIndex{1} at 3:00 min.  If you just do exam 1, you filter for everything the class tagged exam 1.  You can then click the contextual link by the annotation, and hypothes.is will open that page, navigate to the highlighted text and display the annotation. (Note: In LibreText the highlights are hidden by default, and you need to click the "eye" with the slash over it (figure 22\PageIndex{2}.  

      third annotation

    2. n annotation you simply highlight the text you want to annotate, choose "Annotate" and write in the overlay.   Note, the first time you open up a page it will post to "Public" and you need to change that to your class group.  Once you have started posting to the class group that will be the default option, but initially the default is publ

      Weird, it said you can not annotate, but it worked. I am double checking.

    3. . Annotations can be used in two fundamentally different ways.  First, through the proper use of tags you can use it as a tool to assist you in organizing your notes and preparing for exams, quizzes and laboratory experiments. Second, if annotations are posted to your class group you can use it as a tool to communicate with your instructo

      Testing to see if an annotation in transcluded text works. I do not expect it to work

    1. Note that the index values below refer to the row numbers in the training data DataFrame. For example, idx_notCarbonyl=1 selects the molecule in row 0 of the training data, which is hexanal. If you want to select 12-selenazole in row 3 instead, change the line of code to read idx_notCarbonyl=3.

      I am not following this.

    1. used in two fundamentally different ways.  First, through the proper use of tags you can use it to organize your no

      checkthis out

    1. n the gas phase, ozone reacts with hydrogen sulfide to form sulfur dioxide: H2S + O3 → SO2 + H2O In an aqueous solution, however, two com


    1. Metacognition is "thinking about thinking"

      This is a public annotation trying to get students to think about the use of tags as they study from the perspective of metacognition

    1. For example, consider the following without these commands:

      second test

    2. rendering of complicated mathematics, there's also a great app called MathPix that you can get on your smart phone and computer that will allow you to scan or select an equation, and it will give you the LaTeX for it.  Since your account synchs between the phone app and the computer, you can access the resulting LaTeX on your computer to copy and paste into LibreTexts.  You can also select an image of an equat

      test will remove

  24. Jun 2021
    1. he above video shows, placing zinc metal into the copper(II) solution results in a spontaneous redox reaction (ΔG<0ΔG<0\Delta G <0), and if we placed the copper metal into the zinc solution no reaction would occur (ΔG>0ΔG>0\Delta G >0). In an electrochemical cell, we allow electrons to be transferred, which will spontaneously occur in the direction of ΔG<0ΔG<0\Delta G <0, and a cell operating in this fashion is called a galvanic or voltaic cell, which can be used to provide energy to do work, like the common "battery" we use in flashlights and electrical devices. Just as


    1. No one is perfect and you might come across some parts in Fritzing that just don’t fit the breadboard. For example, depending on the library version, your Adafruit T-Cobbler Plus could be the wrong size

      this needs to be clearer. I think....

  25. May 2021
    1. will start by solving the single reactant rate law. Then show how to reduce multi-reactant problems to single reactant problems. We will also introduce two different techniques for solving these. First the Ratio (Two State) Technique, which works well for "precise data", and then the graphing technique, which needs to be used when the data is unpreci


    2. to reduce the number of independent variables to one. This is done by making successive measurements where all reactant concentrations are held constant except for one, with that data showing the rate law as expressed for that reactant, and it can then be solved as a single reactant problem This lesson will start by solving the single reactant rate law. Then show how to reduce multi-reactant problems to single reactant problems. We will also introduce two different techniques for solving these. First the Ratio (Two State) Technique, which works well for "precise data", and then the graphing technique, which needs to be used when the data is unprecise data.


    1. he left part of Figure 12.7 b shows two isobaric transitions for converting ice to steam. The top transition at 1 atm is above the triple point and so liquid water is stable, while the lower transition is below the triple point and the ice sublimes to steam without ever forming a liquid phase. It is important to understand the relationship of these graphs and the differences. The phase diagram represents the phase that would exist for a system at equilibrium as a function of the pressure and temperature. The ri


  26. Apr 2021
    1. Then Henderson-Hasselbalch equation is used to calculate the pH of a solution given the pKa and the concentration of acid and conjugate base. (15 pts) The equation is:

      this assignment teaches the use of random number generators

  27. Mar 2021
    1. Note, both the breadboard and HAT can have separate AD converters that can opperate at different digitizer frequencie

      Fig A8 shows a hat and multiple ways to hook to a Pi, figure A9 shows both an ESPN32 and a ESP 8266. A quick disconnect could easily be made, but this itself goes to the web, and even bypass the PI and go directly to the sheet.

    1. The first page of the Workbook is the "Front Page (figure 4.54.5\PageIndex{5}) and on this you will post your answers and Copies of the three graphs (from the other pages of the workbook, which can be accessed via the tabs at the bottom of the page).

      test in public domain showing links do not highlight

    1. ent chemical reactions were considered to be unidirectional (Reactants → Products) and the percent yield was based on the complete consumption of the limiting reagent. It was pointed out the the percent yield would often be less than 100% and the following four reasons were discussed (section 4.3).


    1. macroscopic perspective of classical thermodynamics, and the microscopic description central to statistical mechanics. The classical approach defines entropy in terms of macroscopically measurable physical properties, such as bulk mass, volume, pressure, and temperature. The statistical definition of entropy defines it in terms of the statistics of the motions of the microscopic constituents of a system – modeled at first classically, e.g. Newtonian particles constituting a gas, and later quantum-mechanically (photons, phonons, spins, etc.). The two approaches form a consistent, unified view of the same phenomenon as expressed in the second law of thermodynamics, which has found universal applicability to physical processes. Function of state


  28. Feb 2021
    1. plugging the following number into your calculator. Odds are you will get an error message, and you need to know how to solve calculations that are bigger or smaller than your

      Belford says this will be on the exam

  29. Jan 2021
    1. e (ICl) molecules that give rise to dipole-dipole attraction

      So the longer bond means it is a weaker interaction?

    1. Plot of vapor pressure as a function of temperature for a variety of substances. It should be noted that this is a "bounded function", with the lower end being the melting point, and the upper end being the boiling point of a substance.

      This graph is important as it shows how you can determine trends in a physical property based on the structure of a molecule. Although water is lighter than diethyl ether and ethanol, it has stronger intermolecular forces holding it together and thus has a lower vapor pressure. This results in a higher boiling point.

    1. This is a very valuable resource for finding safety information on chemicals and it is structured so you can instantly find the source of that information

      You need to realize PubChem is a data aggregator that maintains the provenance of the data. And like anything, you have to analyze it. We have an activity where students find what appear to be conflicting safety recommendations, and are then asked to analyze it.

      This annotation is public, and anyone can see it, even without an account at hypothes.is. If we comment to a group, only the members of the group can see it.

    1. Discussions during the 2019 OLCC were entirely on the hypothes.is web annotation service, which had been integrated into LibreTexts, and was set up to send an email to students and faculty whenever an annotation was created. In future OLCCs, this notification needs to be extended to other types of social media because “email” is often not students’ preferred means for online communication, and these communications need to be across web platforms.

      We are essentially going to use the model that evolved out of the cheminformatics OLCC, using hypothes.is with LibreText. But I expect much more use of external links as students figure how to do code, and use code libraries as they try and set up sensors to Raspberry Pis.

  30. Dec 2020
  31. Nov 2020
    1. Dr. Sunghwan Kim is a Staff Scientist at th

      This is an "open meeting" and I have permission to share the link to the live (virtual) presentation if anyone is interested, just email me before the meeting, rebelford@ualr.edu. Bob Belford

  32. Oct 2020
    1. o print the data from DS18B20 on the serial monitor of the IDE you have to build the circuit by following the schematic.First plug the s


    1. The following script calculates the pH of a random acid and its salt (base) concentration if you give it the Ka of the acid.  Note the commented out code uses the modules format while the code that is working uses the format function.

      This is a hyypothes.is contextual link to text within the Libretext that demos the Binder connection to the Jupyter Hub