# A student announced that she had made a sample of a new material that had a density of 0.85 g/cm^3. Can you tell how large a sample she had made? How?

Can you tell me how much water you have if I tell you its density is $\text{0.998 g/mL}$? (No. You could have a droplet... or several oceans. They'll all have densities near $\text{1 g/mL}$.)