Recent content by Physics Fern

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    Entropy Calc: 1kg Water Heated from 20C to 80C

    I don't believe Carter has put out a list; I haven't been able to find one online either. Our prof didn't provide us with an official list either--he sometimes just gives us a heads up if one of the text answers may be incorrect. Also, when students bring up questions in our tutorials he works...
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    Entropy Calc: 1kg Water Heated from 20C to 80C

    Yeah...in thermo I often feel I've got a problem right, but for some frustrating reason or other my solution turns out to be quite wrong. I think you're alright on this one though, as before posting earlier I had referred to my text so see that that particular answer was indeed on the list of...
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    Internal Energy During Phase Changes

    Ah, thank you Ygggdrasil. I don't know why I was treating water as an ideal gas :blushing:
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    Entropy Calc: 1kg Water Heated from 20C to 80C

    If you're doing Carter problem 6-2 (a), the 1074 J/K answer in the back of the text is wrong. I did it the same was as you and got 778.35 J/K.
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    Internal Energy During Phase Changes

    A thought to add... During melting does the internal energy increase, but the increase goes towards breaking chemical bonds, rather than increasing the temperature of the substance? So dU is nonzero after all, even though it is an isothermal process? The way I'm thinking about it now is that...
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    Internal Energy During Phase Changes

    I know that phase changes, such as the melting of ice, occur at constant temperature. Doesn't this imply that the change in internal energy during the phase change is zero, since the temperature remains the same? I thought that in all isothermal processes this was the case, so that the First Law...
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