What is the mass, in kilogram, of a 51.00 cm3 sample of ethyl alcohol? Density of ethyl alcohol = 0.789 g/cm3.

Answer 1

By definition:

density = mass/volume

multiplying both sides by volume:

density * volume = mass

substituting your numbers in:

0.789g/cm3 * 51.00cm3 = mass

mass = 40.24 g = 0.04024 kg