Determine the volume of hexane in ml that contains 4.206x1022 molecules of hexane.

Question

Determine the volume of hexane in ml that contains 4.206x10²² molecules of hexane. The density of hexane is 0.6548 g/mL and its molar mass is 86.17 g/mol.

Answer 1

First, we will determine the mass of hexane that contains 4.206x10²² molecules. Then, we will use the density of hexane to convert the mass to a volume.

(1) Determine mass

4.206x10²² molecules x 1 mol / 6.02x10²³ molecules x 86.17 g /mol = 6.0204 g hexane

(2) Convert g to ml

6.0204 g x 1 ml / 0.6548 g = 9.194 mls of hexane