Mr. Krones 2005 Stoichiometry test answers.

1. Avogadro's number of carbon atoms has a mass of 12 grams per the atomic mass of 12 amu. Avogadro's number of hydrogen atoms have a mass of 1.01 grams per the atomic mass of 1.01 amu.

2. 1.99 grams of oxygen

3. CuCl2 • 2 H2O

4. C3H4O3 and C6H8O6

5. 21.6 grams of water

6. 1.26 grams of water expected for a % yield of 87.3 %

7a. 240.3 grams of aluminum chloride

7b. 19.5 grams of aluminum hydroxide

8a. 3.43 liters of gas

8b. 12 ml of acid.