How much heat (in joules) is needed to raise the temperature of 200 g of water by 40 degrees C? (specific heat 4.2 J/(g C))
Answer and explanation
Correct answer: C. 33600
- Step 1: Q = m c delta T.
- Step 2: Q = 200 x 4.2 x 40 = 33600 J.
Answer
33600.
Why not the others: The specific heat of water must be included, and the temperature change must be multiplied in.
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