MODULE 3: Exam - Requires Respondus LockDown Browser + Webcam - CHEM 121

CHEM 121
MODULE 3: Exam - Requires Respondus
LockDown Browser + Webcam
 Due No due date




 Points 100




 Questions 10




 Time Limit 120 Minutes
 Requires Respondus LockDown Browser


Attempt History
Attempt Time Score

LATEST Attempt 1 111 minutes 79 out of 100
Score for this quiz: 79 out of 100
Submitted Jan 12 at 3:28pm
This attempt took 111 minutes.

Question 1
pts
You may find the following resources helpful:
Scientific Calculator (Links to an external site.)
Periodic Table
Equation Table

, Show the calculation of the new volume of a gas sample which has an original volume of 660 ml
when collected at 660 mm and 38oC when the pressure increases to 780 mm and the temperature
increases to 45oC.
Your Answer:
660/1000 = .66L
38+273 = 311K
45+273 = 318k
660mm/760 = 0.8684210526 atm
780mm/760 = 1.026315789 atm
pxv/ t = pxv/ t
0.8684210526 X . = 1.026315789 atm x V / 318
0.5731578947/311 = 1.026315789V/318
0.5731578947 x 318 = 1.026315789V x 311
182.2642105 = 319.1842104 V
0.5710314125 L= v
.571 L ~ V




Question 2
pts
You may find the following resources helpful:
Scientific Calculator (Links to an external site.)
Periodic Table
Equation Table