How much heat (in joules) is needed to raise the temperature of 200 g of water by 10 degrees C? (specific heat 4.2 J/(g C))
Answer and explanation
Correct answer: B. 8400
- Step 1: Q = m c delta T.
- Step 2: Q = 200 x 4.2 x 10 = 8400 J.
Answer
8400.
Why not the others: The specific heat of water must be included, and the temperature change must be multiplied in.
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