What is the volume of a sample that has a mass of 10 g and a density of 5 g/mL?

Question

What is the volume of a sample that has a mass of 10 g and a density of 5 g/mL?

Answer 1

Mass : 10g

Density: 5g/mL

Volume = Mass/Density = 10g/(5g/mL) = 2mL

Dimensional analysis

Volume (mL) = 1mL/5g x 10g = 2mL

Answer 2

Dimensional analysis:

10 g x 1 ml/5 g = 2 ml

Units of g cancel leaving you with the desired unites of volume (mls)