Question

14 g of N has the same number of molecules as: ​

Answer 1

14 g of N nitrogen contains 3.01 × 10^23 nitrogen molecules.

Answer 2

Answer

3.01 × 10^23 nitrogen molecules.

Explanation:

Molar mass of the nitrogen = N2 = 2×14u = 28u

We know that

Mass = number of moles × molar mass

14 = number of moles × 28

14/28 = number of moles

0.5 = number of moles

1 mol of my substance contains exactly the avogadro number of molecules i.e 6.022×10^23

Therefore

Molecules = number of moles × 6.022×10^23

Molecules = 0.5 × 6.022 × 10^23

Molecules = 3.011×10^23 “ Nitrogen (N2) molecules