Question

How many grams of lithium chloride, molecular mass 42.5, are dissolved in water to make 500 mL of a 0.450 M solution?

A) 9.56g
B) 42.50g
C)21.25g
D)47.22g

Answer 1

9.5625 gram

Step-by-step explanation:

Molarity = mass in gram ÷ molar mass × volume in dm3

Mass in gram = molarity× molar mass × volume of solution in dm3

Mass in gram = 0.450×42.5×0.5=9.5625 g