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college physics

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calculate the specific heat of 200g of substance whose temperature is 30 degree celcius if it is mixed with 200g of water heated in a 300g iron container at 100 degree celcius. the final temperature of the mixture is 98 degree celcius.

  • college physics -

    In any closed system, the sum of heats gained is zero.

    Heatsubstance+heatiron+heat water=0
    200*c*(98-30)+300ciron*(98-100)+200cwater*(98-100)=0

    look up the spec heat for iron, water, and solve for c.

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