# 500g of water is heated so that its temperature rises from 30C to 72C in...

Question 467
A
9000J
B
12600J
C
21000J
D
25200J
E
88200J
##### Explanation
$$\frac{Q}{t} = \frac{0.5\times4200\times(72-30)}{7}=12600J$$

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