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CBSE Class 9 Answered

My Query!
Asked by | 02 Dec, 2008, 01:38: PM
answered-by-expert Expert Answer

1 mole of N2 gas contains 2 x 6.023 x 1023  atoms of N because N2 gas is a diatomic molecule. 1 molecule of N2 gas is made up of 2 atoms of N

For 0.07 g of N2 gas , number of moles =0.07/28=2.5 x 10-3

If 1 mole of N2 gas  contains 2.5 x 10-3 atoms of N 

Therefore 2.5 x 10-3  mol of N2 gas  contains 2.5 x 10-3 x 2 x 6.023 x 1023  =3.011x 1021  atoms of N

Answered by | 02 Dec, 2008, 03:38: PM

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