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22 December, 06:54

Calculate the number of joules released when 72.5 grams of water at 95.0 degrees Celsius cools to a final temperature of 28.0 degrees Celsius.

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  1. 22 December, 07:13
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    Water's specific heat capacity is 4200 J/Kg°C

    95-28=67

    72.5grams in kg is 0.0725kg

    Energy = 67*0.0725*4200

    Energy = 20,401.5 J or 20.4015 kJ
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