Xenons Heated
How much heat is required to raise the temperature?
A cylinder contains 51.8 moles of xenon gas at temperature of 20.0C and at a pressure of 5 atmospheres (1 atmosphere=1.01*10^5 Pa). How much heat is required to raise the temperature of this gas to 50.0C if the volume is held constant during the process. Treat the xenon as an ideal gas.
Heat capacity for an ideal gas held at constant volume is defined as:
Cp = Cv + nR
Following values Physics by Tipler
Cp = 20.79 J/(mol * K)<==============(directly from text)
Cp = 12.52 + 8.31 = 20.83 J/(mol *K) <==== Calculated
I will use the value given directly by the text:
Q = mCp(T-To)
m= (51.8)(131.29 g/mole) = 6800.822 g
Q= (6800.822)(20.79)(50 - 20)
Q= 4241.7 kJ
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