- Nov 2017
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chem.libretexts.org chem.libretexts.org
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when the temperature is low enough.
Is this because electrons are moving more slowly due to the decrease in temperature/kinetic energy?
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chem.libretexts.org chem.libretexts.org
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which is very very weak, and short range forces of this nature are collectively known as van der Waals interactions
Simply speaking, would this be a molecule interacting with another molecule in space for a quick second and then "tossing" the other molecule like a sling shot?
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cohesive force attracting the molecules together.
In the example of liquid water, would this explain water tension?
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chem.libretexts.org chem.libretexts.org
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R=0.082057(L⋅atmmol⋅K)=8.314472(Jmol⋅K)=62.36367(L⋅torrmol⋅K)
Will these values be given on the test?
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chem.libretexts.org chem.libretexts.org
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Each molecular orbital can only have 2 electrons, each with an opposite spin.
duplicate sentence
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chem.libretexts.org chem.libretexts.org
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C2H2
would this not be C2H4?
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same spin
Would this orbital cause paramagnetism?
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chem.libretexts.org chem.libretexts.org
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Example 9.3.1
Can you do some practices problems during lecture?
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chem.libretexts.org chem.libretexts.org
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Q=μr=1.109D(3.3356×10−30C⋅m1D)(1127.8pm)(1pm10−12m)=2.901×10−20C
can we go over this in detail in class?
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chem.libretexts.org chem.libretexts.org
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chem.libretexts.org chem.libretexts.org
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bonding electrons
what would be the definition of a "bonding electron?"
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chem.libretexts.org chem.libretexts.org
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Metallic bonds
could you elaborate what makes a metallic bond a different type of bond? covalent bonds share elections. ionic bonds between anion/cation. metallic bond...?
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- Oct 2017
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chem.libretexts.org chem.libretexts.org
- Sep 2017
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chem.libretexts.org chem.libretexts.org
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The activity series (table 3.2a)
Does the activity series follow closely with periodic table trends?
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chem.libretexts.org chem.libretexts.org
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PbSO4(s)+2Na+(aq)+2ClO−4(aq)
Why would PbSO4 not be separated? Is this equation assuming that this is in an aqueous solution?
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Hg+2, Ca+2, Sr+2, Ba+2 & Pb+2
So these cations will make a bond soluble or insoluble?
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Ag+, Hg2+2, & Pb+2
So these cations will make a bond soluble or insoluble?
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amound
possible typo, amount dissolved?
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SO-4
possible typo sulfate = SO4(-2)
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chem.libretexts.org chem.libretexts.org
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54)HBrO3 bromic acid
would this not be hydrobromic acid?
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13)Zn(HCO3)2 zinc bicarbonate
Is there an easy way to determine if an element has multiple charges? I originally wrote this as Zinc(II) bicarbonate because it was a transitional metal and I didn't know if it had multiple charges.
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24)diboron hexafluoride B2F6
Would not not condense this to BF3? Or would you stick with the B2F6 due to it being a covalent bond?
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arsenous acid Þ H3AsO3
Do i need to assume that AsO4 is Arsenate so AsO3 is Arsenite even though it wasn't on our polyatomic ions sheet?
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Acetic acid Þ C2H4O2
could you write this as H(C2H3O2)?
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Video 2.7.f: (3'19") Acid Salts 2: YouTube naming the compounds that can form from phosphate (acid, salt, and acid salts)
Why would H3PO4 not be hydrophosphoric acid?
edit: I think I figured it out. So if the acid contains a polyatomic ion then the acid is essentially named after that polyatomic ion. Since this acid contains phosphate, it is named after it and named phosphoric acid. Correct?
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chem.libretexts.org chem.libretexts.org
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Coulombic interactions can be described by the following equation
Will we need to know this equation for future lessons?
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- Aug 2017
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chem.libretexts.org chem.libretexts.org
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The molecular formula lists the elements in the molecule and the number of atoms of each.
how do you determine subscripts?
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chem.libretexts.org chem.libretexts.org
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Multiplication of Numbers in Scientific Notation
So when multiplying and dividing numbers and determining significant figures, do you go with the number with the least amount of significant figures?
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chem.libretexts.org chem.libretexts.org
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How many liters is the volume of 12.140 Kg of Iridium? Use 22.65g/ml as the density of Iridium (Please do this before looking up the answer at the bottom of the video.)
I have a different equation set up however my answer was the same. Can you review this during class?
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∴
what does this symbol mean?
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Video Tutorial 1B.1a: On the Basic Technique for Converting SI Prefixes for Numbers (in Scientific Notation).
When answering these questions on a quiz/test, will you be looking for scientific notation or an exact number?
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length meter m mass kilogram kg time second s temperature (absolute) kelvin K
KNOW THESE and how to convert between measurements. (ex. 1in = 2.54cm)
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chem.libretexts.org chem.libretexts.org
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But a mixture of sand and water is not a solution because the sand does not dissolve, and so is a homogenous mixture.
wouldn't this be a heterogeneous mixture?
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