**Module
Six Sample Exam **

page 4

**Module
Six Part E Gas Law Problems 10 points**

__Boyle’s
Law__

1. A sample of a gas has a volume of 100 mL when measured at 25 ** ^{o}**C
and

760 mmHg. What volume will the gas occupy at 25 ** ^{o}**C and 380 mmHg?

__Charles
Law__

2. The volume of a
gas is 100.0 mL at 27 ** ^{o}**C. At what temperature in degrees Celcius would the volume of the gas be 200.0 mL, assuming the pressure remains constant.

__Dalton’s
Law of Partial Pressures__

3. The volume of
hydrogen collected over water is 100 mL at 25 ** ^{o}**C and 763.8 torre. Calculate the dry volume in milliliters of
hydrogen at standard pressure with the temperature remaining constant. (The partial pressure of water vapor at 25

__Gay-Lussac’s Law__

4. A sample of gas occupies 100.0 L at 710.0 torre and 27 ** ^{o}**C. Calculate the pressure in torre
if the temperature is changed to 127

__Ideal Gas
Equation-Combined Gas Laws__

5. Calculate the
number of moles of nitrogen gas in a 5.00 L cylinder at 27 ** ^{o}**C
and 4 atm pressure. R = 0.0821 L atm/
K mole ) How much does this volume of gas weigh?