How many grams of CuSO4 must be dissolved in 100 mL of total solution to create a 0.25 M solution of CuSO4?

3.990225 grams

Explanation:

Remember: Morality = Moles/Liters

And you are given:

100 mL and 0.25

what you want:

Grams

S

convert the 100 ml to L

100 / 1000 = .1 L

now that you have Liters and Morality put it into the equation

0.25 M = Moles/ .1 L

0.25 * .1 L = .025 moles

now you take this and turn it into grams

0.025 moles / molar mass = grams

0.025 moles / 159.609 g = 3.990225 grams