* look at the photo * 1. Saturated solutions of each of the following compounds are made at 20°C. Circle the letter(s) of the solution(s), which will form a precipitate upon heating.
a) NaCl b) Na2SO4 c) Li2CO3 d) Sucrose

2. A saturated solution of potassium chloride is prepared in 100.0 g of water at 20°C. If the solution is heated to
50°C, how much more KCl must be added to obtain a saturated solution?

3. A saturated solution of sucrose in 1000.0 g of boiling water is cooled to 20°C. What mass of rock candy will be formed?