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Unformatted text preview: Q15 True or FalseA closed system cannot interact with its surroundings.Density is an intensive property.A homogeneous system must be a pure substance.Avogadros number has no units. Mole fractions are intensive properties.Q610 True or FalseThe pV work in a reversible process in a closed system is always pV.The pV work for a reversible process of a closed system can be found from only the initial and final states.The pV work for a reversible process of a closed system can be found from only the initial and final states if one also knows the equation of state, p(V,T).For every process Usystem=  Usurroundings.For every cyclic process, the final state of the surroundings is the same as the initial state. Q1115 True or FalseFor two systems that consist entirely of liquid water at 1 atm. If system A has more internal energy than system B, then TA> TB.The quantities H, U, PV, H, and pV all have the same units.For a constant volume process U = H.H is only defined for a constant pressure process.For an ideal gas at constant pressure dU = CVdT.Q1620 True or FalseCpis a state function.Cpis an extensive property.A Thermodynamic process is defined by the initial and final states.Every process that has T=0 is isothermal.q must be zero for an isothermal process.Q2127 For each process, indicate whether U, H, q, and w is positive negative or zero.Reversible melting of benzene at 1atm and its normal melting point.Reversible melting of water at 1atm and 0oC.Reversible adiabatic expansion of an Ideal Gas.Reversible Isothermal expansion of an Ideal Gas.JouleThompson (adiabatic throttling) of an Ideal Gas.Reversible isobaric heating of an Ideal Gas.Reversible Isochoric cooling of an Ideal Gas.Q2833 True or FalseH is a state function.CVis independent of temperature for an Ideal Gas.U=q+w for an open system.For a closed system in the absence of external fields U=q+w....
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 Fall '08
 OHRN
 Physical chemistry, Mole, pH

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