1. When 14.25 g of magnesium was heated in air, 23.61 gof magnesium oxide was produced.
a) What mass of oxygen has combined with the magnesium?
b) What percent of the magnesium oxide is magnesium?
2. When aluminum combines with chlorine gas, theyproduce the substance aluminum choride. If 4.94 g of aluminumchloride is formed from 1.00 g of aluminum, how many grams ofchlorine will combine with 6.25 g of aluminum?