The latent heat of vaporization of ethanol is 200 calories/gram. This means that _____.

Question

a) about 200 calories of heat must be added to 1 gram of ethanol to change its temperature
b) about 200 calories of heat must be added to 1 gram of ethanol to convert it from a solid to a liquid
c) about 200 calories of heat must be added to 1 gram of ethanol to convert it from a liquid to a gas

How do I figure this one out?

Answer 1

How do you figure this out?

Learn what the heat of vaporization is:

http://www.physlink.com/education/askexperts/ae93.cfm

Answer 2

Okay, thank you.

Answer 3

a block of aluminum weighing 140. g is cooled from 98.4 c to 62.2 c with the release of 1080 joules of heat. from this data, calculate the specific heat of aluminum

Answer 4

What amount of heat is required to raise the temperature of 20 grams of water from 10°C to 30°C? The specific heat of water is 4.18 J/g°C.Select one of the options below as your answer: A. 1200 joules B. 1500 joules C. 2000 joules D. 2300 joules E. 3000 joules