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An ideal gas sample occupies a container of volume 0.45L at STP. 1) Find the number of molecules in in the sample. 2)If the gas is carbon monoxide (CO), what is the sample's mass?
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Added Mon, 03 Aug '15
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P*V=n*R*T

At STP, P=1atm & T=273K, V=0.45lit, R=0.0821

n=0.02007mole

No. of molecules=NA*Moles

                            =6.022*1023*0.02007

                            =1.2086*1022molecules

mass = Mole*molecular weight

        0.02007*(12+16)

     =0.56196
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