How much heat in joules is needed to raise the temperature

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Homework Statement


How much heat in joules is needed to raise the temperature of 7.0 L of water from 0°C to 78.0°C? (Hint: Recall the original definition of the liter.)

Homework Equations


How much heat in joules is needed to raise the temperature of 7.5 L of water from 0°C to 87.0°C? (Hint: Recall the original definition of the liter.)
2.73e+06 J

The Attempt at a Solution


I answered 2.28^06 J.
I have actually already asked this question on another forum, and they couldn't figure it out either. Please help.
 

Answers and Replies

  • #3
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I think so...

I did 7000 gm x 78 C=546000 calories
546000x4.184j/calorie=2284.5 kj
Then converted kj to j
 
  • #4
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OH. MY. GOSH. I didn't put the 10 in when I answered. The answer is correct. 2.28x10^6 J.
 
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