Question

Please help, and show how you did it! Excuse the numbers1-5.

#1: Calculate the number ofgrams of solid Mg(OH)2 that will dissolve in 650 mL of water. ForMg(OH)2, Ksp = 1.5e-11. Assume no volume change for the solutionwhen the solid is added.

1. A. 0.0092
2. B. 0.0059
3. C. 0.012
4. D. 0.019
5. E. 0.060

#2: Which of the followingbest describes what happens to the solubility of lead (II) iodidewhen it is dissolved in a 0.10 M NaI solution, compared with purewater? For lead (II) iodide, Ksp = 6.5e-9.

1. A. Lead (II) iodide is more solublein 0.10 M Nal solution than in pure water.
2. B. Lead (II) iodide is less solublein 0.10 M Nal solution than in pure water.
3. C. The solubility of lead (II)iodide is the same in both a 0.10 M Nal solution and in purewater.