Solid potassium chlorate forms oxygen (O2) gas and solid potassium chloride when heated.
2 KClO3 = 3 O2 + 2 KCl
a. How many grams of oxygen gas are formed when 15.2 g of potassium chlorate is heated?
b. If only 4.5 g of Oxygen gas are recovered, what is the percent yield of this reaction?