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A sample of argon gas (39.948 u) contains 2.41×1022 atoms of argon. The gas is initially...

A sample of argon gas (39.948 u) contains 2.41×1022 atoms of argon. The gas is initially at a pressure of 0.950 atm and a temperature of 298 K but then expands isobarically by 475 cm3 . (a) How many moles of argon gas are present? (b) What is the initial volume of the gas (in L)? (c) Calculate the work (in Joules) done by the gas during this process. (d) What is the final temperature (K) of the gas (after the expansion)? (e) What is the rms velocity (m/s) of the argon atoms before the expansion?

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