Heat flow water = 79.221g*4.184(J/g*c)*(27.2c-22.4c)heat flow water = 1591.011J (endothermic)Heat flow metal = -1591.011J (exothermic)Specific heat capacity metal = -1591.011J / (67.156*-65.3)specific heat capacity metal = .363(J/g*c)Specific heat capacity Cu = .385(J/g*c)Identity metal = Cu (copper)Specific heat capacity % error = 5.19%
you can instead say you used formula(n) for water or metal and then explain results
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water temperature was found by
use heat flow formula. and instead of describing the formula say you used formula(n)
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Heat flow equations
label all equations as equation(n)
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I
missing title
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well.
16/19 points
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Afterwards, the percent errorwas calculated by subtracting the reference value from the found value, then divided by the givenvalue, and multiplied by 100
label this as equation() or just say you calculated percent error
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Results
description of results is missing
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100 mL of 1.0 M
don't include results in methods
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π = ππβπ
define variables
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2π»
needs 2 as a subscript along with the phase needs to be included
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rror.
15/19 pts
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π₯π»
define π₯π» LS
Grading Rubric
missing data points and axes need to be labled
The beaker was emptied in the sink, rinsed thoroughly with water, and driedcompletely with a paper towel
cleaning steps are assumed unnecessary
twas a volumetric, not graduated pipett
unnecessary
(no need to be exact
remove this its supposed to be exact
ΰ―
define varaibles "D"= desnsity, "m"= mass, "v"= volume
There was no dropping or splashing.
unnecessary
A metal rod and a 25 mL graduated cylinder were obtained. A piece of weighing paper was placed on thebalance to provide a barrier to protect the balance from corrosion. The balance was zeroed
unnecessary
π· = π/π£
define the variables "D" as density and "m" as mass
PreparaΖon and Material
not nessasary
grams
incorrect unit. It should be mL
Figure
there isnt supposed to be gridlines. Along with axes lables are supposed to be in parentheses
Rubric
graph does not have labled axes
Put the metal rod on the scale and record its weight. Put it in half-full flask and record the volume.Calculate the density of the rod using d=m/v.Fill a beaker with liquid sucrose. Record weight of beaker. Put some liquid in a beaker on a scale andrecord its weight. Throw away the liquid and repeat this two more times. Do this for all liquids sucroseand soda and juice. Calculate density of liquids using d=m/v and then calculate average. Make graph ofsucrose and density for each liquid. Add a trend line
not in a passive tone or past tense. The description in methods lacks description. Along with the different parts of the experiement are not described or broken up with sub heads.
Figure 1
axes not labled at all and are supposed to be in parentheses
o begin use a 125 mL Erlenmeyer flask and fill it with about 50 mL of 2% sugar liquid.Measure a 50 mL beaker by using a balance, record value. Then using that 50 mL beaker and a10 mL volumetric pipette plus pipette filler, fill the 10 mL volumetric pipette and filler to 10.00 mLof 2% sugar. Put the liquid in the volumetric pipette into the 50mL beaker that was previouslymeasured. Next measure and record the mass of the beaker using the balance. This processwas repeated 2 more times for a total of 3 trials Then using a cranberry juice using the samesteps and doing a total of 3 trials. Once more do the same steps using root beer for a total of 3trials
need to have a passive tone when writting methods
Using a balance, place weigh paper on it and zero the scale. Using that measure a metalrod and record measurement. Then take a 25 mL graduated cylinder and fill about half withwater then record the exact volume. In the graduated cylinder add the metal rod, record the newvolume
not in past tense. should be rewritten to be in past tense