Calculate the number of moles and number of grams of solute in 250 mL of a 0.10M CaCl2.

Answer 1

0.10 M means 0.10 mols/liter.
So if you have 0.1 mols in 1000 mL, how many mols will you have in 250 mL?
grams = mols x molar mass.

Answer 2

18.2