Chemistry
Chapter 14 Worksheet #6
Mr. Fedell
1. Calculate the volume occupied by 15.20 grams of nitrogen at 100˚C and a pressure of 800
torr.
2. What volume would be measured at STP by a sample of gas measuring 1250 mL at 21˚C and
a pressure of 715 torr?
3. Calculate the mass of 5.0 liters of H2 at 25˚C and a pressure of 5.0 atm.
4. A 500 mL sample of gas at 100˚C and a pressure of 725 torr has a mass of 0.850 grams. What
is the molecular weight of the gas?
5. Calculate the density of CO2 at 150˚C and a pressure of 500 torr.
6. A sample of gas occupies a volume of 5.00 liters at 700 torr and 30˚C. At what temperature,
in ˚C, will the pressure be 620 torr if the volume remains constant?
7. Calculate the number of grams of helium in a 6.0 liter cylinder at 27˚C and 800 mm Hg.
8. A given sample of gas has a volume of 4.40 liters at 60˚C and 1.0 atm pressure. Calculate the
pressure if the volume is changed to 5.00 liters and the temperature is changed to 27˚C?
9. At a certain temperature, H2O molecules are travelling at 30 mph. How fast are Ar atoms
moving at the same temperature?
10. Given:
C3H8(g)
+
5 O2(g) 
3 CO2(g)
+
4 H2O(g)
How many liters of CO2 at 500˚C and 850 torr are produced from 6.60g of C3H8?
11. Given:
2 H2(g)
+
O2(g) 
2 H2O(g)
If this reaction occurs at 200˚C and 1500 torr, how many liters of O2 will react with
20.0L of H2?
12. Given:
Fe2O3(s)
+
3 H2(g)
 2 Fe(s)
+
3 H2O(g)
How many grams of Fe2O3 will react with 50.0L of H2 if the reaction is carried out at
35.0˚C and 745 torr?
13. Given:
N2(g)
+
3 H2(g)

2 NH3
How many grams of N2 and how many grams of H2 are needed to produce 1000L of
NH3 at 500˚C and 200 atmospheres?