# An empty 250 ml beaker has a mass of 60 g. When 100 mL of oil is added to the beaker the total mass is 140 g. What is the approximate density of the oil?

Sep 22, 2016

The density is a under $1 \cdot g \cdot m {L}^{-} 1$

#### Explanation:

$\rho , \text{density}$ $=$ $\text{Mass"/"Volume}$

${\rho}_{\text{oil}}$ $=$ $\text{Mass"/"Volume}$ $=$ $\frac{\left(140 - 60\right) \cdot g}{100 \cdot m L}$ $=$ $\frac{80 \cdot g}{100 \cdot m L}$

$=$ ??g*mL^-1

Will the oil float on water? Why or why not?