**CHEM 1001/CHM 1020/ Chm1025C/CHM1032C Name:________**

**Module 6 Sample Pretest**** **

**Module
Six Part E Gas Law Problems 20 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 Celsius would
the volume of the gas be 200.0 mL, assuming the
pressure remains constant.

__Dalton’s
Law of Partial Pressures__

3. Calculate the
dry volume in milliliters of 200 mL of hydrogen gas
collected over water at 25 ** ^{o}**C at
760 torre 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

**Avogadro’s Law**

5. A 1.5 mole sample of a gas occupies 25.0 L
at 758 torre and 27^{o}C. Calculate the
Volume of the gas, if more molecules are injected into the vessel increasing
the moles to 2.5 moles, provided the pressure and the temperature do not
change.

__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?