# How can I calculate the moles of a solute?

Jul 28, 2014

Number of moles of solute = mass of solute / molar mass of solute

mass is measured in grams and molar mass is measured in g $m o {l}^{-} 1$

molar mass is defined as the mass of one mole of a substance in grams.

A solution is prepared by dissolving 18 g of Glucose in 100 g of water. Calculate the number of moles of solute Glucose.

Molar mass of Glucose is 180 g$m o {l}^{-} 1$

Mass of Glucose is 18g

number of moles = mass of solute / molar mass of solute

=    18g / 180gmol^-1

= 1/10 mol  or 0.1 mol