A little confused on this question... I think I would need to take the solute and put it over the solvent, and then use molar mass. Confused on how density plays into this problem.

Question

Sucrose is very soluble in water. At 25ºC, 211.4 grams of sucrose will dissolve in 100 g of water. Given that the density of the saturated sucrose solution is 1.34 g/mL, what is the molarity of the solution? The molar mass of sucrose is 342 g/mol.

Answer 1

M = mols/L solution. The density is given so that you can convert the 100 g of solution into a volume.
mols = grams sucrose/molar mass sucrose = ?
mass solution = (100+211.4) = volume in mL x density in g/ml. Substitute and solve for volume in mL and convert to L, then find M.