Moles and Stoichiometry Class Work

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Moles and Stoichiometry Class Work

1) Balance the following reaction:

2Na(s) + 2H2O(l) à 2NaOH (aq) + H2(g)

a. How many moles of water will react with 3.5 mol of sodium?

b. How many moles of sodium will react to produce 4.0 mol of hydrogen?

2) Aluminum will react with sulfuric acid in the following reaction:

2Al(s) + 3H2SO4(l) à Al2(SO4)3(aq) + 3H2(g)

a. How many moles of H2SO4 will react with 18 mol of Al?

b. How many moles of aluminum sulfate will be produced from that reaction?

3) Propane burns in excess oxygen according to the following reaction.

C3H8 + 5O2 à 3CO2 + 4H2O

a. How many moles of CO2 are formed from 3.85 mol of propane?

b. If 0.647 mol of oxygen are used, how many moles of C3H8 are consumed?

4) Ammonium sulfate can be made from the reaction of NH3 with H2SO4 according to the following equation:

2NH3 + H2SO4 à (NH4)2SO4

a. How many moles of ammonium sulfate can be made from the reaction of 30.0 mol of NH3?

b. How many moles of sulfuric acid are needed to make 5.00 moles of product?

5) Ammonia is made industrially by reacting nitrogen and hydrogen under pressure, at high temperature, and in the presence of a catalyst:

N2 (g) + 3H2(g) à 2NH3 (g).

a. If 4.0 mol of H2 react, how many moles of NH3 will be produced?

b. How many mol of hydrogen will react with 2.5 mol of N2?

6) Through electrolysis, water can be decomposed into hydrogen and oxygen gas:

2H2O(g) à 2H2(g) + O2(g)

a. How many moles of hydrogen are produced from 4 mol H2O?

b. How many moles of oxygen are produced from that same reaction?

3MgO + 2Na3P à Mg3P2 + 3Na2O

7. If you have 2 moles of Mg3P2 how many moles of Na3P do you have?

8. If you have 15 moles of MgO, how many moles of Na2O do you have?

9. If you have 4 moles of Na3P, how many moles of MgO do you have?

I2 + 6HNO3 à 2HIO3 + 6NO2 + 2H2

10. If you have 30 moles of HNO3 how many moles of H2 do you have?

11. If you have 22 moles of HIO3, how many moles of I2 do you have?

12. If you have 14 moles of H2, how many moles of NO2 do you have?

10. If you have 138 moles of HNO3 how many moles of NO2 do you have?

2 Cu2O3 + 6 Cl2 à 4 CuCl3 + 3 O2

(13) How many moles of O2 are produced if 0.5 mol of Cl2 are used?

14. How many moles of CuCl3 are produced if 0.5 moles of Cu2O3 are used?

15. How many mole of O2 are produced if 0.2 mol of CuCl3 are used?

16. How many moles of O2 are produced if 10.0 mole of Cu2O3 are used?