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A glass container was initially charged with 1.80 moles of a gas sample at 3.75 atm...

A glass container was initially charged with 1.80 moles of a gas sample at 3.75 atm and 21.7 °C. Some of the gas was released as the temperature was increased to 28.1 °C, so the final pressure in the container was reduced to 0.998 atm. How many moles of the gas sample are present at the end?

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