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31 January, 03:50

A 200.0 g china serving bowl is warmed 65.0°C when it absorbs 2.6 kcal of heat from a

serving of hot food. What is the specific heat of the china dish?

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  1. 31 January, 03:53
    0
    837.2 J/kg. oC

    Explanation:

    Mass of China dish, m = 200g

    Change in temperature, ΔT = 65.0°C

    The heat energy, Q = 2.6 kcal = 2600 cal

    The relation between the heat flow and specific heat is given as:

    Q = mcΔT

    Therefore, the specific heat of the China dish is:

    c = Q/mΔT = (2600cal) / (200g) (65.0°C) = 0.2 cal/g.°C

    Note:

    1 cal = 4.186 J

    1 g = 10^-3 kg

    Therefore, week have:

    c = (0.2) (4.186/10^-3) J/kg. oC

    = 837.2 J/kg. oC
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