Modern vacuum pumps make it easy to attain pressures of the order of 10⁻¹³ atm in the laboratory. a) at a pressure of 8.65×10⁻¹⁴ atm and an ordinary temperature of 296.0 k , how many molecules are present in a volume of 1.07 cm³? n= ? moleculesb) how many molecules would be present at the same temperature but at 1.06 atm instead? n=? molecules