• Limiting Reactants
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• 15.00 g aluminum sulfide and 10.00 g water react
until the limiting reagent is used up. Which is the
limiting reagent? Which is the excess reactant?
Al2S3 + 6 H2O ---> 2Al(OH)3 + 3 H2S
• If there is 35.0 grams of C6H10 and 45.0 grams of O2
which is the limiting reactant? Which is the excess
reactant?
• 2C6H10 + 17O2 ---> 12CO2 + 10H2O
• Percent Yield
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• For the balanced equation shown below, if the
reaction of 0.112 grams of H2 produces 0.745
grams of H2O, what is the percent yield?
Fe3O4 +4H2 3Fe + 4H2O
• If 12.0 g of ammonia (NH3) produced 1.87 g of
hydrogen, what was the percent yield?
• 2 NH3 (g) → 3H2 (g) + N2 (g)
• GASES
SHOW YOUR WORK!
• How many moles are contained in 2.5 liters of
methane (CH4) at STP?
• What volume will 0.750 moles of nitrogen gas
occupy at STP?
What volume will 100. grams of oxygen gas occupy at
STP?
Ideal Gas Law
• What is a gas’s temperature in Celsius when it has a
volume of 25 L, 203 mol, 143.5 atm?
• What is the pressure exerted by 5.00 moles of
nitrogen gas contained in a 30.0 Liter container at
25.0 °C?