NaCl is added to three different solutions; one of AgNO3, one of Ca(NO3)2, and one of Ni(NO3)3. Which of these solutions will form a precipitate with NaCl?

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.