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14 April, 15:36

How many joules of heat are evolved by a reaction in a calorimeter where the temperature of the bomb and the water increases from 19.50°C to 22.83°C? The bomb has a heat capacity of 650.0 J/°C, and the calorimeter contains 320.0 g of water.

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  1. 14 April, 17:15
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    The number of joules of heat that are evolved by a reaction in a calorimeter is 692,640 joules

    calculation

    Heat = MCΔT where,

    M (mass) = 320.0 g

    C (specific heat capacity) = 650.0 j/c

    ΔT (change in temperature) = 22.83-19.50 = 3.33 C

    heat is therefore = 320.0 g x 650 j/c x 3.33 c = 692,640 joules
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