# What is the volume of 75.0 g of ethanol?

Sep 28, 2016

Approx. $100 \cdot m L$

#### Explanation:

$\rho , \text{density}$ of ethanol is $0.789 \cdot g \cdot m {L}^{-} 1$ at $20$ ""^@C.

Since $\rho$ $=$ $\text{Mass"/"Volume}$, $\text{volume}$ $=$ $\frac{\text{mass}}{\rho}$ $=$ $\frac{75.0 \cdot \cancel{g}}{0.789 \cdot \cancel{g} \cdot m {L}^{-} 1}$

$=$ ??*mL

Note that the given density is for pure ethanol. When you distill ethanol under water free conditions, you can actually see the volume expanding when you expose the ethanol to air, as it absorbs atmospheric water.