1. Review #1
In the formation of carbon dioxide from carbon monoxide and oxygen, how many moles of carbon monoxide are needed to react completely with 7.0 moles of oxygen gas?

2. Review #2
How many moles of carbon dioxide, CO2, can be formed by the decomposition of 5 moles of aluminum carbonate, Al2(CO3)3 ? ____Al2(CO3)3 → ____Al2O3 + ___CO2

3. Review #3
How many moles of oxygen are required to burn 22.4 moles of ethane gas, C2H6 at standard conditions? (think combustion rxn)

4. Review #4
A chemist performs the synthesis of sodium chloride from its elements. The chemist begins with 46.3 grams of sodium. How many moles of chlorine are needed? 2 Na + Cl2 → 2 NaCl

5. Review #5
Suppose that an excess of propane, C3H8 burns in g of O2. How many moles of H2O will be formed? C3H8 + 5 O2 → 3 CO2 + 4 H2O

6. Review #6
A certain amount of glucose, C6H12O6 burned in oxygen, and produced 22 grams of carbon dioxide, CO2. How many grams of water was produced at the same time? C6H12O6 (s) + 6 O2(g) → 6 CO2 (g) + 6 H2O (g)

7. Review #7
How many grams of potassium chloride are produced if 2.50 g of KClO3 is decomposed?
2KClO3 (s)  2 KCl (s) O2 (g)

8. Level 2 #8
Fe2O3 + 3H2  2Fe + 3H2O
Determine the moles of water produced from 6.50 moles of iron (III) oxide.
How many moles of hydrogen gas are required to completely react with 10 moles of Fe2O3?
If 15.0 moles of solid iron are produced, how many moles of hydrogen gas does this require?

9. Level 2 #9
4Al + 3O2  2Al2O3
If 7.59 moles of aluminum are used, how many moles of aluminum oxide can be produced
Determine the number of oxygen moles that are required to completely react with 4.55 moles of aluminum.
2.75 moles of aluminum oxide are produced; how many moles of oxygen gas does this require?

10. Level 3 #10 2Al + 3H2SO4  3H2 + Al2(SO4)3
Determine the mass of aluminum sulfate produced from 5.25 moles of sulfuric acid.
How many grams of aluminum are required to react with 8.95 moles of sulfuric acid?
If 6.90 moles of hydrogen gas are produced, how many grams of aluminum does this require?

11. Level 3 #11
3Ca + N2  Ca3N2
How many grams of calcium nitride are produced from 1.29 moles of calcium?
Determine the mass of nitrogen gas required to completely react with 6.44 moles of calcium.
If 9.77 moles of calcium nitride are produced, how many grams of nitrogen gas are required?

12. Level 3 #12 ____Al + ___Cl2  ____AlCl3
If 6.55 grams of aluminum chloride are produced, how many moles of chlorine gas are required
Determine the mass of aluminum needed to completely react with 9.55 moles of chlorine gas.

13. Level 4 #13
V2O5 + 5Ca  5CaO + 2V
Determine the mass of calcium oxide produced from 5.00 grams of vanadium (V) oxide.
How many grams of calcium are needed to produce 1.96 grams of vanadium?
If 7.98 grams of calcium are used, determine the mass of V2O5 required for a complete reaction.

14. Level 4 #14
3Fe + 4H2O  4H2 + Fe3O4
Determine the mass of Fe3O4 produced from 19.5 grams of Fe.
How many grams of water are needed to produce 1.55 grams of Fe3O4?
If you started with 20.1 grams of water, how many grams of iron are needed for a complete reaction?

15. Level 4 #15
Calcium hydroxide reacts with ammonium chloride to produce ammonium hydroxide and calcium chloride.
Determine the mass of calcium chloride produced from 17.8 grams of ammonium chloride.
How man grams of ammonium hydroxide can be produced from 9.74 grams of calcium hydroxide?
Your lab group started with 5.65 grams of calcium hydroxide. How many grams of ammonium chloride are required for a complete reaction?

16. Level 5 #16
Lead (II) hydroxide reacts with hydrochloric acid to produce water and lead (II) chloride.
Determine the limiting reactant if 5.65 grams of lead (II) hydroxide is reacted with 6.95 grams of hydrochloric acid.
Based on your calculations from 1a, calculate the amount of grams remaining for the reactant in excess.
Would you have enough hydrochloric acid to produce 12.5 grams of lead (II) chloride from the information in part 1a?

17. Level 5 #17
Consider the reaction between gaseous diiodine pentoxide and carbon monoxide to produce carbon dioxide and iodine gases.
80.0 grams of diiodine pentoxide react with 28.0 grams of carbon monoxide. Determine the mass of iodine that can be produced.
What is the percent yield for iodine, in the above situation, if only moles of iodine where produced?

18. Level 5 #18
Silver nitrate reacts with iron (III) chloride to give silver chloride and iron (III) nitrate.
In an experiment, 45.0 grams of iron (III) chloride are mixed with 25.0 grams of silver nitrate. Which reactant is the limiting reactant?
What is the maximum number of moles of silver chloride that could be obtained from the mixture in the situation above?
Determine the percent yield for the situation above if you obtained 9.82 grams of iron (III) nitrate.

19. Level 6 #19 K2SO4 + BaCl2  2KCl + BaSO4
If you started with 4.55 grams of potassium sulfate and 5.90 grams of barium chloride, how many grams of barium sulfate will be produced?
Identify the limiting reactant. Then, determine how many grams remain of the reactant in excess.

20. Na3PO4 + CaCl2  NaCl + Ca3(PO4)2
Level 6 #20
Na3PO4 + CaCl2  NaCl + Ca3(PO4)2
Balance the above chemical reaction
Determine the limiting reactant if you used 5.65 grams of each reactant.
What is the maximum amount of calcium phosphate that can be produced?

21. Level 6 #21 Na3PO4 + KOH  NaOH + K3PO4
Balance the above chemical equation
How many grams of each reactant are required to produce 2.15 grams of sodium hydroxide?
Determine the limiting reactant if you started with 1.25 grams of sodium phosphate and 2.55 grams of potassium hydroxide.
Determine the amount remaining for the reactant in excess based.

22. Answers 14 mol CO a) 18.5g CaCl2, b) 9.22g NH4OH, c) 8.16g NH4Cl
15 mol CO2≈ 20 mol CO2
a) Pb(OH)2, b) 5.24g HCl, c) yes
78.4 mol O2
a) 50.7g I2, b) 80.1% I2
1.01 mol Cl2
a) AgNO3, b) 0.147mol AgCl, c) 88.9% Fe(NO3)3
8.018 mol H2O
a)6.09g BaSO4, b) K2SO4 is limiting and 0.465g BaCl2 remain
9.0 g H2O
1.54 g KCl
b) CaCl2 is limiting, c) 5.26 g Ca3(PO4)2
a) 19.5 mol H2O, b) 30 mol H2, c) 22.5 mol H2
b) 2.94 g Na3PO4 and 3.02g KOH, c) Na3PO4, d) 1.26g KOH
a) 3.80 mol Al2O3, b) 3.41 mol O2, c)4.13 mol O2
a) 599 g Al2(SO4)3, b) 161 g Al, c) 124 g Al
a) 63.8 g Ca2N3, b) 60.1 g N2, c) 274 g N2
a) g Cl2, b) 172g Al
a) 7.71 g Cao, b) 3.86g Ca, c) 7.24 g V2O5
a) 26.95g Fe3O4, b) 0.483g H2O, c) 346.7g Fe