IntroThermo

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Author:
dasannekind
ID:
276160
Filename:
IntroThermo
Updated:
2014-06-05 03:20:16
Tags:
Introductory Thermodynamics
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Description:
Introductory Thermodynamics
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  1. What is the difference between calculating work for a reversible and an irreversible process?
    If a process is carried out reversibly, Pext can not be seen as a constant. Thus, the equotation becomes w= -nRT ยง1/V dV = -nRT (lnVf-lnVi)
  2. If a perfect gas is expanded isothermally, what is U?
    It is zero because the energy of a perfect gas only depends on its temperature.
  3. How can you calculate the heat capacity c?
    It's Cvm/R or (Cpm-R)/R
  4. How can you calculate reversible adiabatic work?
    It's w= n(Cpm-R)*(Tf-Ti)
  5. How can you calculate irreversible work when only n, Cpm and T are given?
    w= - n*Cpm*(Tf-Ti)
  6. How can you calculate H from q?
    It has the same value.
  7. How does U relate to T?
    U = nCvm * (Tf-Ti)

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