Question

The latent heat of vaporization for ethyl alcohol is 854 J/g. The amount of energy, rounded to the nearest whole number, needed to change 5.20 grams of ethyl alcohol from a liquid to a gas is J.

Answer 1

4441

Step-by-step explanation:

Answer 2

4441 J

Step-by-step explanation:

The amount of energy needed to change the ethyl alcohol from liquid to gas state is given by

`Q=m \lambda_v`

where

m = 5.20 g is the mass of the alcohol

`\lambda_v = 854 J/g` is the latent heat of vaporization of the substance

Substituting the numbers into the formula, we find:

`Q=(5.20 g)(854 J/g)=4,441 J`