STRAIGHTERLINE CHEM 101 GENERAL CHEMISTRY GRADED EXAM 4 - APRIL 2022
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Course
CHEM 101
Institution
CHEM 101
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• CHEM101_MH_V4
• Topic 11: Modern Materials
Started on Saturday, March 26, 2022, 12:57 AM
State Finished
Completed on Saturday, March 26, 2022, 1:29 AM
Time taken 31 mins 47 secs
Grade 96.60 out of 115.00 (84%)
Question 1
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4.60 points out of 4.60
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straighterline chem 101 general chemistry graded exam 4 april 2022
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CHEM101_MH_V4
Topic 11: Modern Materials
Started on Saturday, March 26, 2022, 12:57 AM
State Finished
Completed on Saturday, March 26, 2022, 1:29 AM
Time taken 31 mins 47 secs
Grade 96.60 out of 115.00 (84%)
Question 1
Correct
4.60 points out of 4.60
Flag question
Question text
How much energy (heat) is required to convert 52.0 g of ice at –10.0°C to steam at 100°C?
Specific heat of ice 2.09 J/g • °C
Specific heat of water 4.18 J/g • °C
Specific heat of steam 1.84 J/g • °C
Molar heat of fusion 6.02 kJ/mol
Molar heat of
40.7 kJ/mol
vaporization
, Select one:
a. 12.0 kJ
b. 23.0 kJ
c. 46.4 kJ
d. 158 kJ
e. 2.30 ×104 kJ
Question 2
Correct
4.60 points out of 4.60
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Question text
The vapor pressure of ethanol is 400. mmHg at 63.5°C. Its molar heat of vaporization is 39.3 kJ/mol. What is
the vapor pressure of ethanol, in mmHg, at 34.9°C? (R = 8.314 J/K • mol)
Select one:
a. 109 mmHg
b. 220 mmHg
c. 366 mmHg
d. 376 mmHg
e. 1470 mmHg
Question 3
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4.60 points out of 4.60
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Question text
Which of the following statements is true?
Select one:
a. The higher the viscosity, the faster a liquid flows.
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