Question

Ethanol is a common laboratory solvent and has a density of 0.789 g/mL. What is the mass, in grams, of 113 mL of ethanol?

Answer 1

 D = m/V 
0.789 = m/111 
m = 87.579g

Answer 2

Answer: The mass of ethanol is 89.2 grams

Explanation:

Density is defined as the mass contained per unit volume.

$Density=\frac{mass}{Volume}$

Given : Mass of ethanol =  ?

Volume of ethanol = 113 ml

Density of ethanol = 0.789 g/ml

Putting in the values we get:

$0.789g/ml=\frac{mass}{113ml}$

$mass=89.2g$

Thus mass of ethanol is 89.2 grams