0.25 pts What is the total number of molecules in 11.2 liters of #N_2# gas at STP?

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Answer 1 · 2017-04-30T05:53:52

#"The molar volume at STP is (depending on the syllabus.......)"#

The molar volume at STP is (depending on the syllabus) is #22.4*L*mol^-1#. Ideality is assumed.

And to find the number of gaseous molecules, we simply muliltply the molar quantity by #N_A#, #"Avogadro's number"#.

So we simply divide the volume by the molar volume:

#(11.2*cancelL)/(22.4*cancelL*mol^-1)xxN_A=1/2xx1/(1/(mol))xxN_A#.

#1/2xxmolxx6.022xx10^23*mol^-1=3.01xx10^23# gaseous molecules........