Question

Calculate number of atoms in
i) 0.5 mole atom of nitrogen​

Answer 1

Answer:

Atomic mass of nitrogen $=14\;g

Therefore , mass of 1 mole of nitrogen =14g

Now, 1 more =6.022×1023atoms

Since, 1g−atom=1 more

0.5g−atom=0.5moles

Therefore no of atoms in 0.5 moles of Nitrogen =6.022×1023×0.5

=3.011×1023

Answer 2

The number of atoms in  0.5 mole atom of nitrogen​ is $3.012\times 10^{23}$

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

1 mole of nitrogen $(N)$ =   $6.023\times 10^{23}$  atoms of nitrogen

0.5 moles of nitrogen $(N)$ = $\frac{6.023\times 10^{23}}{1}\times 0.5=3.012\times 10^{23}$ atoms of nitrogen $(N)$

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