Aluminum reacts with aqueous copper (ii) chloride in a single displacement reaction to produce aluminum chloride and solid copper. how many moles of copper (ii) chloride are required to react fully with 0.357 mol aluminum?

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.