1. The decomposition of CaCO3 proceeds according to the following equation. A. If 5 moles of CaCO3 decompose completely, how many moles of CaO are created?

B. If 1 mole of CaCO3 decomposes completely, how many grams of CO2 are created?

C. If 30 grams of CaCO3 decomposes completely, how many grams of CO2 are created?

2. A chemical reaction proceeds according to the following equation.
SiO2 + 4 HF → SiF4 + 2 H2O
A. If 5 moles of SiO2 are used in this reaction, how many moles of H2O are created?

B. If 34.2 moles of HF are used in this reaction, how many grams of H2O are created?

C. If 9.4 grams of SiF4 are created in this reaction, how many grams of SiO2 were used?