Stoichiometry Problems

Use your knowledge of chemical equations to solve the following problems. Each problem refers to a numbered equation from the Group Activity, Introduction to Chemical Equations The equation must be balanced before you can proceed. Show your work for all problems! Failing to show your work will make studying harder if not impossible!

1. Nitrogen Gas and Hydrogen Gas react to form Ammonia (number 12). (All reactants and products are gases).
   
   
   
   1. If you have 1 L of nitrogen gas and 3 L of hydrogen gas how many liters of ammonia form? If any reactant gases are leftover give the amount of each that did not react.
   2. If you have 3 L of nitrogen gas and 3 L of hydrogen gas how many liters of ammonia form? If any reactant gases are leftover give the amount of each that did not react.
   3. If you have 5.7 L of nitrogen gas and 12.9 L of hydrogen gas how many liters of ammonia form? If any reactant gases are leftover give the amount of each that did not react.
   4. If you want to make 25 L of ammonia, how much nitrogen and hydrogen gas do you need in liters?
   5. You have 12 mol nitrogen and an unlimited supply of hydrogen. How much ammonia can you make (in moles)?
2. Zinc and Hydrochloric Acid react to form Zinc Chloride and Hydrogen Gas (number 7).
   
   
   
   1. You have 10 mol zinc and 15 mol hydrochloric acid. How many moles of hydrogen gas can you make? If any reactants are leftover give the amount of each that did not react.
   2. You want to make 22.4 L of hydrogen gas at STP. How many moles of zinc do you need to use?
   3. You have 130.8 g of zinc and 1 mol of hydrochloric acid. How many moles of hydrogen gas can you make? If any reactants are leftover give the amount of each that did not react.

3. Benzene burns in oxygen to form carbon dioxide and water (number 18).
   
   
   
   1. If you burn 2 mol of benzene how much oxygen (in moles) is required to burn all of the benzene?
   2. How many moles of carbon dioxide result from the burning of 2 mol of benzene?
   3. How many moles of water result from the burning of 78.1 g of benzene?
   4. How many grams of carbon dioxide result from the burning of 156.2 g of benzene?
4. Elemental sulfur reacts with fluorine gas to form sulfur hexafluoride (number 8).
   
   
   
   1. How many moles of fluorine gas are required to react with each mole of elemental sulfur?
   2. If you have 12 mol of fluorine gas and 2 mol elemental sulfur then how many moles of sulfur hexafluoride can you make? If any reactants are leftover give the amount of each that did not react.
   3. If you have 2.4 mol of fluorine gas and 0.05 mol elemental sulfur then how many moles of sulfur hexafluoride can you make? If any reactants are leftover give the amount of each that did not react.
   4. You have 128.25 g of elemental sulfur. How many moles of fluorine gas are required to react with all of the sulfur?
   5. You have 384.8 g of elemental sulfur. If you have more than enough fluorine gas to react with all of the sulfur then how many grams of sulfur hexafluoride can you make?