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Problem: The lowest pressure ever obtained in a laboratory setting is 4.0×10−11 Pa.At this pressure, how many molecules of air would there be in a 30°C experimental chamber with a volume of 0.090 m3?Express your answer using two significant figures.

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Ideal gas equation:

PV=nRT

n = PV/RT

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Problem Details

The lowest pressure ever obtained in a laboratory setting is 4.0×10−11 Pa.

At this pressure, how many molecules of air would there be in a 30°C experimental chamber with a volume of 0.090 m3?

Express your answer using two significant figures.

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