Question

1.How many grams of KCl is in 225 mL of a 0.452 M solution?
2.What volume in mL of 0.555 M solution contains 85.0g Na2SO4?
3.How many grams of CaCl2 would be dissolved in 2.0L of a 0.10 M solution of CaCl2?

Can you please show me how to do these problems?

Answer 1

1. mols = M x L = ?
Then mols = grams/molar mass. Substitute mols and molar mass and solve for grams.

2. Just like 1 but in reverse.
mols Na2SO4 = grams/molar mass = ?
Then M x L = mols. You know mols and M, solve for L.

3. I think this is just #1 again.
I'll check you answers if you post your work (not just the answers)