Question: A gas sample containing 1.50 moles at 25 o C exerts a pressure of 400. torr. Some gas is added to the same container, and

A gas sample containing 1.50 moles at 25^oC exerts a pressure of 400. torr. Some gas is added to the same container, and the temperature is increased to 50^oC. If the pressure increases to 800. torr, how many moles of gas were added to the container? Assume a constant- volume container.

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