Question

Calculate the molar mass of a solute in a 1.30 L solution with of 0.50 M

containing 10.5 g of the solute.

Answer 1

Answer: 16 g/mol

Explanation: Molarity is Moles/Liters or Mol/L

(0.50 mol/L)(1.30L) = 0.65mol

(cancels out L)

Molar mass is g/mol so...

10.5g/0.65mol = 16.1 g/mol

Rounded to 2 sig figs is 16 g/mol