Question

A black rock has a mass of 12.5 grams. When dropped into a graduated cylinder, the volume rises from 20 ml to 24 ml. What is the density of the rock?

Answer 1

3 g/mL

Step-by-step explanation:

Density is mass divided by volume (g/mL).

Mass of rock = 12.5

Volume of rock = 24-20 = 4mL

Density of rock = 12.5g/ 4mL = 3.125 g/mL

Round to the lowest number of significant figures which is 1 to get 3 g/mL