Question

What is the mass of 62.0 mL of ethanol? The density of ethanol at room temperature = 0.789 g/mL?

Answer 1

`48.9` grams of ethanol

Explanation:

Remember that density is given by

`rho=m/V`

`m` is the mass of the substance

`V` is the volume of the substance

We have the density and the volume, so we can find the mass

`0.789g"/"mL=m/(62mL)`

`m=62color(red)cancel(mL)*0.789g"/"color(red)cancel(mL)~~48.9g`

So, there will be `48.9` grams of ethanol at room temperature.