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Amrutha t Asked a Question
July 11, 2020 9:55 ampts 30 pts
40 kcal of heat transferred from a hot body (100°C) to surroundings (27 C). Change in entropy of universe is cal k1
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  • Ruby negi thankyou
    solution....
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    Ruby negi
    for any doubt u can ask...
  • Vaishali sharma
    for a system which is loosing heat Q1 will be negative and for surrounding which is taking it....i.e.Q2 will be positive
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    Vaishali sharma
    hope u will get it
  • Amrutha t
    thank u. all my doubt will be clarified.
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    Ruby negi
    welcome...
  • Ruby negi
    Q1 is the heat that lost by hot body and Q1 is the heat that is gain by surrounding. that's why we take negative of Q1 in case of hot body (as it loss heat)and positive of Q1 in ca...
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  • Ruby negi
    The hot reservoir has a loss of entropy ΔS1=−Q1/T1 because heat transfer occurs out of it (remember that when heat transfers out, then Q has a negative sign). The surrounding has a...
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