0.200 mol of calcium fluoride, CaF2, is added to 50.0 cm3 of distilled water which is then made up to a total volume of 250 cm3. Determine the concentration of the solution, in mol dm–3.

What is the molarity of a solution prepared by dissolving 317 g of CaCl2 (calcium chloride) into enough water to make 2.50 L of solution? (MW CaCl2 = 110.98 g/mol) _______ M Your answer should be rounded to three significant figures. Do not include units in your answer.

A solution is prepared by dissolving 28 g of Ca3(PO4)2 (MW = 310.18 g/mol) in enough water to make a 150 mL of solution. What is the molarity of Ca2+ ions in solution? (in M)

In Experiment II, 20 cm3 of 0.1 mol/dm3 hydrochloric acid is reacted with excess calcium carbonate. Suggest the concentration of hydrochloric used if the same volume was used for Experiment III.

CaF 2(s) ← Ca2+(aq) + 2 F−(aq) K = 4.0 × 10−11sp49. The concentration of F (aq)− in drinking water that isconsidered to be ideal for promoting dental health is4.0 × 10−5 M. Based on the information above, the maximumconcentration of Ca 2+(aq) that can be present in drinkingwater without lowering the concentration of F−(aq) below theideal level is closest to(A) 0.25 M(B) 0.025 M(C) 1.6 × 10−6 M(D)Unauthorized copying or reuse ofany part of this page is illegal. GO ON TO THE NEXT PAGE.-24-1.6 × 10−15 M

A student dissolves 20 g of potassium chloride in 100 cm3 of water in a beaker. What is the concentration of the solution in g/dm3?