2.) For the thermal decomposition of calcium carbonate:

CaC03 (s) CaO (s) C02 (g)

a.) Use methods shown in this course to clearly calculate the mass of carbon dioxide released by the decomposition of 5.4 grams of calcium carbonate.

b.) Calculate the number of moles of calcium carbonate require to produce 50.7 grams of CaO.

3.) Aluminum oxide is produced via the following reaction:

3 02 (g) 2 A1203 (s)

a.) Determine the number of grams of oxygen that would react with 3.4 moles of Al.

b.) Calculate the grams of aluminum oxide produced from mixing 10.0 grams of Al and 12.6 grams of oxygen.

c.) Calculate the mass percent composition for aluminum oxide.