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A sample of oxygen gas occupies a volume of 2.00 L at 27 oC and 2.00 atm pressure.  What volume, in L, will this sample of oxygen gas occupy at the same temperature but at 453 mm Hg?

A sample of nitrogen dioxide gas has a volume of 1.50 L at 23 oC.  What volume, in L, will this gas occupy at 123 oC, if the pressure is held constant?

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