Chemistry question below?

Question

Which solution contains the largest number of moles of chloride ions?

1) 10.0 mL of 0.500 M barium chloride
2) 4.00 mL of 1.000 M sodium chloride
3) 7.50 mL of 0.500 M iron (III) chloride
4) 25.00 mL of 0.400 M potassium chloride
5) 30.00 mL of 0.100 M calcium chloride

Answer 1

Multiply mL x M x #Cl 1- to get the answer for each.

1) 10 x .5 x 2 = 10 [BaCl2]
2) 4 x 1 x 1 = 4 [NaCl]
3) 7.5 x .5 x 3 = 11.25 [FeCl3]
4) 25 x .4 x 1 = 10 [KCl]
5) 30 x .1 x 2 = 6 [CaCl2]