Which of the following contains greatest number of N atoms?

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22.4 lit nitrogen gas at STP

500 mL of 2.00 M NH3

1.00 mol of NH4CI

6.02×1023 molecules of NO2

answer is A.

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Detailed Solution

(1) 22.4lit N2 gas at STP=1mol N2=N0 molecules of N2=2N0 atoms of N(2) 500×21000=1mol of NH3=N0 molecules of NH3=N0 atoms of N

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