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 oC
and
760 mmHg. What volume will the gas occupy at 25 oC and 380 mmHg?
Charles
Law
2. The volume of a
gas is 100.0 mL at 27 oC. 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 oC at
760 torre pressure with the temperature remaining
constant. (The partial pressure of water
vapor at 25 oC is 23.8 torre.)
Gay-Lussac’s Law
4. A sample of gas occupies 100.0 L at 710.0 torre and 27 oC. Calculate the pressure in torre
if the temperature is changed to 127 oC
while the volume remains constant.
Avogadro’s Law
5. A 1.5 mole sample of a gas occupies 25.0 L
at 758 torre and 27oC. 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 oC
and 4 atm pressure. R = 0.0821 L atm/
K mole )
How much does this
volume of gas weigh?