A an ideal gas occupies a volume of 22-cm3 at 20degc and, Ask an Expert

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(a) An ideal gas occupies a volume of 2.2-cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container.

molecules

(b) If the pressure of the 2.2-cm3 volume is reduced to 1.2 10-11 Pa (an extremely good vacuum) while the temperature remains constant, how many moles of gas remain in the container?

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