Question

A student measures the mass of a substance as 1.7132kg and it's volume as 0.65l. What is the density substance in g/mL? Round your answer to the correct number of significant figures

Answer 1

Answer:

The substance has a density of 2.636 grams per mililiter.

Explanation:

We must remember that density ($\rho$), measured in grams per mililiters, is the mass of the substance ($m$), measured in grams, divided by its volume ($V$), measured in mililiters. That is:

$\rho = \frac{m}{V}$

In addition, a kilogram equals 1000 grams and a liter equals 1000 mililiters. If we know that $m = 1713.2\,g$ and $V = 650\,mL$, then:

$\rho = \frac{1713.2\,g}{650\,mL}$

$\rho = 2.636\,\frac{g}{mL}$

The substance has a density of 2.636 grams per mililiter.