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1) Helium gas with a volume of 2.60 litres, under a pressure of 0.180 atmospheres at a temperature of 314 K, is warmed until both the pressure and the volume are doubled. Consider Helium as a (monoatomic) ideal gas. The molar mass of Helium is 4.00g/ mol. (a) What is the final temperature? (b) What is the mass of the gas in the container? (c) How many atoms of Helium are present in this sample?
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