Calculate the of molecules of n2 ofo2 and of ar in 100 l

Given % composition of air: N2 78.09%,O2 20.94%, Ar 0.93%

a) Calculate the # of molecules of N2, ofO2, and of Ar in 1.00 L of air at 21 ºC and 1.00atm.

b) Calculate the mole fractions of N2,O2, and Ar in the air.

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