Chem 152 S10 PLTL #3
1.
What fraction of an atom occupying a face position of a cubic lattice is part of the unit cell?
a. 1
2.
b. 1/2
c. 1/4
d. 1/6
e. 1/8
The equation that represents the number of atoms in a face-centered cubic unit cell is
a. 8 (1/8) +
NAME: Emily Dierkes
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MOLAR MASS BY FREEZING POINT
DEPRESSION
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DO NOT WRITE ANYTHING IN COLUMN A OF SHEET 1
DATA AND DATA ANALYIS
HCl
1 Table 1: HCl (aq)
1
M =
M
mL
[HCl] from standardization
Volume (H 2O)
[HCl(aq)]0
V(1.00 M added) (mL)
0
1
2
3
4
5
6
7
2
4
4
4
4
4
4
4
Conductivity, (S/cm)
pH
where c is the concentra
DATA AND CALCULATIONS
Stock Solutions
KI (for H determination)
KI (for orders of reaction, lower of
the two [KI] solutions)
H2O2
Density 15% H2O2
Density 15% H2O2 in g/L
Molarity of 15% H2O2
1
1
1
1
2
4
Enthalpy of Decomposition of H 2O2
1.00
0.25
M
15
%
DATA AND CALCULATIONS
Stock Solutions
KI (for H determination)
KI (for orders of reaction, lower of
the two [KI] solutions)
H2O2
Density 15% H2O2
Density 15% H2O2 in g/L
Molarity of 15% H2O2
1
1
1
1
2
4
Enthalpy of Decomposition of H 2O2
M
% mass/mass
g/m
NAME:Emily Dierkes
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ELECTROCHEMISTRY
By checking box with an X on the left hand side, I certify that I have not falsified data and that I have not plagiarized any part of this lab report. Failure to sign this declaration
will cost
Emily Dierkes
Email: [email protected]
K, DG, DHo, and DSo for the [CoClPr3]+ to [CoClPr2Me3]+ Reaction;
Pr is 2-Propanol and Me is Methanol
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NAME:
Email:
ELECTROCHEMISTRY
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will cost you 10% of the total points.
Wh
NAME:
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K, DG, DHo, and DSo for the [CoClPr3]+ to [CoClPr2Me3]+ Reaction;
Pr is 2-Propanol and Me is Methanol
By checking box with an X on the left hand side, I certify that I have not falsified data and that I have not plagiarized any part of this l
Chem 152 PLTL #2
1. Oxygen gas, O2, effuses through a barrier at a rate of 0.183 mL/minute. If an unknown gas effuses
through the same barrier at a rate of 0.259 mL/minute, what is the molar mass of the gas?
a) 16.0 g/mol
b) 20.8 g/mol
c) 28.0 g/mol
d) 44
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Chem 152 PLTL Workshop #1
Gas Laws
1.
All of the Gas Laws can be used for any pure gas or a mixture of gases. Why?
2.
Why is it necessary to use Kelvin rather than Celsius temperatures in gas law problems?
3.
The density of a gas composed only of carbon a
Sample Final Exam Questions for Chem 152 from a previous year
(18) Part I: Discussion (6 points each)
(6) 1. The pH of a 0.1 M solution of sodium carbonate (Na2CO3) would be
greater than 7
exactly 7
less than 7 (Circle your choice)
Write the equation(s) w
Answers to Sample Final Exam Questions for Chem 152
from a prev ious y ear
(18) Part I: Discussion (6 points each)
(6) 1. The pH of a 0.1 M solution of sodium carbonate (Na2CO3) would be
greater than 7
exactly 7
less than 7 (Circle your choice)
Write the
NAME:Emily Dierkes
x
Email: [email protected]
MAGNETIC
SUSCEPTIBILITY
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NAME:
Email:
MAGNETIC
SUSCEPTIBILITY
By checking box with an X on the left hand side, I certify that I have not falsified data and that I have not plagiarized any part of this lab report. Failure to sign this declaration will
cost you 10% of the total poi
Chem 152 PLTL #4
Solutions
1.
What is the mass percent of zinc chloride of a 1.12 m zinc chloride solution
a. 1.52%
2.
d. 18.0%
e. 24.6%
b. 0.0246
c. 0.167
d. 0.888
e. 0.976
d. 25.2%
e. 23.0%
What is the mass percent FeCl3 in a solution that is 1.84 m?
a.