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21 May, 07:26

By how much does the temperature of mercury increase? the specific heat of mercury is 140

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  1. 21 May, 07:37
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    Heat energy = 140 J = 20/1000 * sp. heat * (change in temp.)

    = 20/1000 * 139 * temp. increase

    = 2.78 * temp. incr.

    Increase in temp = 100/2.78 = 35.97 K.

    to raise the temp. of 20 g of water by 35.97 K

    = 20/1000 * 4186 * 35.97

    = 3011.5 J
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