SOLUTION: A calorie is the amount of heat needed to raise the temperature of 1 pound of water 4 Fahrenheit degrees. How many calories would be needed to raise 20 pounds of water from 78 degr

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Question 389122: A calorie is the amount of heat needed to raise the temperature of 1 pound of water 4 Fahrenheit degrees. How many calories would be needed to raise 20 pounds of water from 78 degrees to 90 degrees Fahreneheit?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
From 78 degrees to 90 degrees is a change of 12 degrees Fahrenheit. Thus,

It would take 3 calories to raise one pound of water from 78 degrees to 90 degrees

Multiply by 20, since there are 20 pounds of water. So 60 calories of heat energy are required.