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Questions  

The number of nitrogen molecules present in 1c.c of gas at NTP is

a
2.67×1022
b
2.67×1021
c
2.67×1020
d
2.67×1019

detailed solution

Correct option is D

1 c.c = 1 mL. At NTP 1 mol of nitrogen gas occupy 22400 mL.

22400mL of N2 gas =6.023×1023 molecules of N2 

1 mL of N2 gas =6.023×1023 molecules22400mL×1 mL=2.69×1019molecules

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