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March 25, 2017

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A steam engine's boiler completely converts 155 kg of water to steam. This process involves the transfer of 3.5 x 10^8 J by heat. If steam escaping a safety valve does 1.76 x 10^8 J of work against the outside atmosphere, what is the net internal energy of the water-steam system?

Do I need to use the mass and specific heat of water to find Q, or am I making this more complicated than it is?

  • Physics - ,

    The heat used is given, the escaped heat is given, so the net stored internal energy is the difference. I think you are making it more complicated..

  • Physics - ,

    I don't use the mass at all then?

  • Physics - ,

    Mass Does not need to be used.

  • Physics - ,

    cxv

  • Physics - ,

    10

  • Physics - ,

    i don't know , my teacher is about to ask me the same question hashtag rip
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