A water sample contains 0.1 M of Pb2+ and 0.1 M of Th4+ ions; when a solution of IO3– is slowly added to this sample, which of the ions will precipitate first and why? Ksp Pb(IO3)2 = 2.5 × 10–13 and Ksp Th(IO3)4 = 2.4 × 10–15.

During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?