(2 points) You are given two white solid unknown ionic compounds and are tasked with identifying which one is calcium carbonate, a dietary supplement for calcium deficiency, and which one is lithium carbonate, an exploratory drug for the treatment of mood disorders. One of these white solids dissolve in water while the other does not. Identify which compound would dissolve in water, and explain why one of these compounds is soluble while the other is not. (3 points) A student dissolves some solid Mg(C2H3O2)2 in enough water to make 500. mL of solution. What mass of solid was used if the final concentration of C2H3O2 is 0.400M ? a. 28.5g b. 57.0g c. 14.2g d. 114g