1. Gas Stoichiometry

2. You know the drill… Write the balanced chemical equation
State your givens
Make sure your units are consistent
(i.e. convert to Kelvin, kPa, etc.)
Use mole ratios to solve

3. Gas Stoichiometry

4. What volume of CO2 forms from 5.25 g of CaCO3 at 1.02 atm & 25ºC?
CaCO3  CaO CO2

5. How many grams of Al2O3 are formed from 15. 0 L of O2 at 0
How many grams of Al2O3 are formed from 15.0 L of O2 at atm & 21°C?
4 Al O2  2 Al2O3

6. Zn (s) + 2 HCl (aq)  ZnCl2(aq) + H2(g)
Find volume of hydrogen gas made when 38.2 g zinc react with excess hydrochloric acid at 1.06 atm and 88oC.
Zn (s) HCl (aq)  ZnCl2(aq) H2(g)

7. What is the volume of CO2 produced at 370 C and 1. 00 atm when 5
What is the volume of CO2 produced at 370 C and 1.00 atm when 5.60 g of glucose are used up in the reaction:
C6H12O6 (s) + 6O2 (g)  6CO2 (g) + 6H2O (l)

8. What mass of sodium azide, NaN3(s), is required to produce the 67
What mass of sodium azide, NaN3(s), is required to produce the 67.0 L of nitrogen gas that is needed to fill a car’s airbag? Assume a temperature of 32˚C and 1.04 atm