calculate the mass of a liquid with a density of 2.5g/ml and a volume of 15ml

Answer 1

Density = mass / volume

We know the density = 2.5 g / ml

We know the volume = 15 ml

Just solve for mass...

Density = mass / volume

mass = density x volume

mass = 2.5 g / ml x 15 ml

mass = 37.5 g = 38 g (to 2 significant figures)