In Figure Q1(b), a tank with size ? ?? .? ?? ? is filled with
argon at 18.5°C and 650 kPa. There is a leakage in the tank that
caused the pressure to drop to 350 kPa. At this point, the
temperature is decreased by 4°C. (i) Calculate the amount of argon
leaked out from the tank. (ii) Can we assume the argon in this case
as an ideal gas? Why? Also, how you relate the temperature decrease
of this argon to the change of the internal energy from microscopic
point of view?
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