3. When 3000 g of water is cooled from 80.0C to 10.0C, how much heat energy is lost?
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Answer:
878640 J
Explanation:
Mass of water = 3000g
specific heat of water = 4184 J/kg ⁰C
change in temperature = 10⁰C -80⁰C
Q = mc× change in temperature
= 3× 4184 × 10⁰- 80⁰C
= 878640 J
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