Question

The density of a sample of gas is 1.0 g/L. What is the density in units of mg/mL

Answer 1

1.0 mg/mL

a) Convert grams to milligrams

Mass = 1.0 g × (1000 mg/1 g) = 1000 mg

b) Convert litres to millilitres

Volume = 1 L × (1000 mL/1 L) = 1000 mL

c) Calculate the density

ρ = mass/volume = 1000 mg/1000 mL = 1.0 g/mL