Question: Modern vacuum pumps make it easy to attain pressures of the order of 10-13 atm in the laboratory. (a) At a pressure of 9.00 X

Modern vacuum pumps make it easy to attain pressures of the order of 10-13 atm in the laboratory.
(a) At a pressure of 9.00 X 10-14 atm and an ordinary temperature of 300.0 K, how many molecules are present in a volume of 1.00 cm3?
(b) How many molecules would be present at the same temperature but at 1.00 atm instead?

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