Question

Ethanol is a common laboratory solvent and has a density of 0.789 g/mL. What is the mass, in pounds, of 49.0 gal of ethanol

Answer 1

Answer: The mass of the ethanol is 322.6 pounds

Explanation:

Density is defined as the mass contained per unit volume.

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

Given : Mass of ethanol = ?

Density of ethanol= $0.789g/ml$

Volume of ethanol = 49.0 gal = 185485 ml    ( 1gal=3785ml)

Putting in the values we get:

$0.789g/cm^3=\frac{xg}{185485ml}$

$x=146347g=322.6pound$         (1g=0.00220462pound)

Thus the mass of the ethanol is 322.6 pounds