Question

What is the molarity of a solution prepared by placing 7.2 g of

glucose in a volumetric flask and adding water to get 250.0 mL of
solution? The molar mass of glucose is 180 g/mol.

Answer 1

1 molar glucose solution contains 180 g of glucose per litre.
The given solution contains 7.2 * 4 = 28.8 g per litre.
So it’s molarity is 28.8 / 180
= 0.16.