Question

How many particles are present in 7gms of Nitrogen molecule??

Answer 1

6.023*10²³....particles...

Answer 2

1 gm-mole of nitrogen molecule is 28 grams. So 7 gram of nitrogen molecule is 7/28=0.25 gm-mole.

According to Avogardo's Law number of atoms in 1 mole of any substance = 6 x 10 to the power -23.

Therefore no of atoms in 7 gms of nitrogen = 6 x 0.25 x 10 to the power -23.

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