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7 January, 02:00

You have a 15.0 gram sample of gold at 20.0°C. How much heat does it take to raise the temperature to 100.0°C?

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  1. 7 January, 02:30
    0
    =154.8 J

    Explanation:

    Change in enthalpy = MC∅ where M is the mass of the substance, C is the specific heat capacity and ∅ is the change in temperature.

    Change in temperature = 100.0°C-20.0°C=80°C

    ΔH=MC∅

    The specific heat capacity of gold = 0.129 J/g°C

    ΔH = 15.0g*0.129J/g°C*80°C

    =154.8 J
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