1. One mole of oxygen gas is at a pressure of 6.00 atm and a temperature of 27.0째C.
(a) If the gas is heated at constant volume until the pressure triples, what is the final temperature?
(b) If the gas is heated so that both the pressure and volume are doubled, what is the final temperature?
2. Gas is contained in an 8.0-L vessel at a temperature of 20째C and a pressure of 9.0 atm.
(a) Determine the number of moles of gas in the vessel.
(b) How many molecules are in the vessel?
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