(a) An ideal gas occupies a volume of 1.0 cm3 at 20°C and atmospheric pressure. Obtain the number of molecules of gas in the container.
_________molecules
(b) If the pressure of the 1-cm3 volume is reduced to 1.6 × 1011 Pa (an extremely good vacuum) while the temperature remains constant, determine how many moles of gas remain in the container?
_________mol