If you put 0.25 molar solution of Sodium Chloride (NaCl) in 100 ml of distilled water. ... how much salty precipitate remains in an evaporating dish from 10 ml of solution?

Answer 1

mols NaCl = M x L = 0.25 x 0.01 = ?
g NaCl in the dish is mols x molar mass = ? and that's the amount in the dish after evaporation of the water.

Answer 2

ok, in 100ml you add .25M. The question is how much of the .25M solution did you add to the 100ml?

Answer 3

I think the answer to that is 10 mL.