Problem: The lowest pressure attainable using the best available vacuum techniques is about 10-12N/m2.At such pressure, how many molecules are there per cm3 at 13 °C?Express your answer using two significant figures.

FREE Expert Solution

Consider the gas law:

PV=nRT, where n is the number of moles and R is the gas constant given by, R = 8.314 J•K-1

The number of molecules is given by:

Number of molecules=nNA, where NA is Avogadro's number.

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Problem Details

The lowest pressure attainable using the best available vacuum techniques is about 10-12N/m2.


At such pressure, how many molecules are there per cm3 at 13 °C?

Express your answer using two significant figures.

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