Quiz 3 "Chemical Formulas and Equations" Worth 20pts ID: A Students are to answer the following items by writing their answers on the line provided and to calculate any problems. And answer all essays in a complete sentence. 1. Balance the following equations: (HINT: Put a check mark next to each balanced element) a. _C3H6(g) + NO(g) C3H3N(g) + _HO(g) + ___N(g) (2.5pts) - 2. What is the empirical formula of sodium dichromate if the mass percentages are 17.5% Na, 39.7% Cr, and 42.8% 0? (10pts) Fe2O3(s) + 3CO(g) - 3. How many grams of iron can be produced from 1.00 kg Fe2O3. (Hint: Make sure you convert). (7.5pts) - 2Fe(s) + 3CO2(g)