Question

A piece of metal weighing 15.442 g is placed in 49.7 ml of ethyl alcohol (d = 798 g/ml) in a graduated cylinder. the alcohol level increases to 51.8 ml. the best value for the density of the metal from these data is:

Answer 1

Volume of ethyl alcohol increase is equal to volume of metal so 51.8 - 49.7 = 2.1 ml. Density = mass / volume so density = 15.442 / 2.1 = 7.35 g/ml