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    Thermodynamics homework help! A mass of 0.35kg of ice at -15°C is lowered into an insulated beaker containing 0.61kg of water at 59°C. What is the temperature after equilibrium has been reached?

    Every answer I have given has been wrong and I don't know what to do.
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    (Original post by mcczoe)
    Thermodynamics homework help! A mass of 0.35kg of ice at -15°C is lowered into an insulated beaker containing 0.61kg of water at 59°C. What is the temperature after equilibrium has been reached?

    Every answer I have given has been wrong and I don't know what to do.
    When they reach thermal equilibrium, they will both be have the same temperature.

    What have you tried?
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    (Original post by kingaaran)
    When they reach thermal equilibrium, they will both be have the same temperature.

    What have you tried?
    I've tried the Qlost = Qgained approach with the shc of ice and water.
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    (Original post by mcczoe)
    I've tried the Qlost = Qgained approach with the shc of ice and water.
    Okay, can I see your exact equation please?
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    2030=shc of ice, 4180=shc of water
    (0.35)(15-x)(2030)=(0.61)(x-59)(4180)
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    (Original post by mcczoe)
    2030=shc of ice, 4180=shc of water
    (0.35)(15-x)(2030)=(0.61)(x-59)(4180)
    I think you should be using -15^{\circ}C rather than +15^{\circ}C.
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    (Original post by pleasedtobeatyou)
    I think you should be using -15^{\circ}C rather than +15^{\circ}C.
    No, it still says it's wrong, with or without the minus sign.
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    0.645 kg of Water is present at state 1 is state zero is ice justedipped into the watee
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    (Original post by Anfanny)
    0.645 kg of Water is present at state 1 is state zero is ice justedipped into the watee
    The question says nothing about Hydrogen Bonds, so I think we just ignore them.
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    (Original post by mcczoe)
    No, it still says it's wrong, with or without the minus sign.
    Could you post the full question (and solution if you have it)?
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    A mass of 0.35kg of ice at -15°C is lowered into an insulated beaker containing 0.61kg of water at 59°C. What is the temperature after equilibrium has been reached?
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    (Original post by mcczoe)
    A mass of 0.35kg of ice at -15°C is lowered into an insulated beaker containing 0.61kg of water at 59°C. What is the temperature after equilibrium has been reached?

    I get about 2.9 degrees celcius for the final temp. What was your answer?
 
 
 
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