Module 9

A balancing act

100

____ Al(OH)₃ + ____ H₂SO_{4 --> _____} Al₂(SO₄)₃ + ___ H₂O

 2 Al(OH)₃ + 3 H₂SO_{4 -->} 1 Al₂(SO₄)₃ + 6 H₂O

200

___ CH₃NH₂ + ___ O_{2 --> ____} CO₂ + ___ H₂O + _ N₂

4 CH₃NH₂ + 9 O_{2 -->} 4 CO₂ + 10 H₂O + 2 N₂

300

___ C₃H₆ + ___ O₂ --> ___ CO₂ + ___ H₂O

2 C₃H₆ + 9 O₂ --> 6 CO₂ + 6 H₂O

400

___ C₆H₁₄ + ___ O₂ --> ___ CO₂ + ___ H₂O

2 C₆H₁₄ + 19 O₂ --> 12 CO₂ + 14 H₂O

500

___ BaO + ___ Al --> ___ BaAl₄ + ___ Al₂O₃

3 BaO + 14 Al --> 3 BaAl₄ + 1 Al₂O₃

Moles and more

100

How many moles of Oxygen are required to produce 2.33 moles of water? 

C₃H₇SH + 6 O₂ --> 3 CO₂ + SO₂ + 4 H₂O

3.50 moles of O₂

200

N₂ + 3 H_{2 -->} 2 NH₃

How many moles of ammonia would be produced by the reaction of 8.00 g of nitrogen with excess hydrogen? 

0.57 moles of ammonia

300

How many grams of Oxygen are formed when 58.6 g of KNO₃ decomposes according to the following reaction? The molar mass of KNO₃ is 101.11 g/mol

4 KNO₃ --> 2 K₂O + 2 N₂ + 5 O₂

23.2 g of O₂

400

Determine the grams of ethanol (C₂H₅OH) when 150.0 g of glucose is used according to the following fermentation reaction

C₆H₁₂O_{6 -->} 2 C₂H₅OH + 2 CO₂

76.94 g of ethanol

500

Many home barbecues are fueled with propane gas (C₃H₈). What mass of Carbon Dioxide (in kg) forms upon the complete combustion of 18.9 L of propane. Assume that the density of the liquid propane in the tank is 0.621 g/mL (Hint: Begin by writing a balanced equation for the combustion reaction)

70.30 kg CO₂