Question

You are given an unknown liquid that has a density of 0.98 g/mL. It's volume is 39.63 mL. What is the mass of the unknown liquid?

Answer 1

38.8 g

Step-by-step explanation:

Density is just mass divided by volume, so if you know 2 of those 3 things you can solve for the other one.

Let's write it as: D = m/v

We know D, and we know v, so solve for m:

m = Dv

Now just plug in the the known values:

m = (0.98 g/ml)( 39.63 ml) = 38.8 g

(Notice how ml cancelled out, leaving grams, which is what we wanted for mass.)