Question

calculate the number of nitrogen atoms present in 3 moles of nitrogen gas

Answer 1

It's 1 mole = mass of the nitrogen

Here we can say, mass of the nitrogen=1mole

1mole=6.022×10^23

And we can get the mass of nitrogen by

Mass of nitrogen=no. Of protons+neutrons

Mass of nitrogen=7+7

Mass of nitrogen=14u

Answer 2

Answer:

18.099 × 10^23

Explanation:

No. of particles = No. of moles × Avogadro constant

《value of avogadro constant is 6.033 × 10^23》

= 3 × 6.033 × 10^23

=18.099 × 10^23

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Therefore the number of particles are 18.099 × 10^23

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