Chapter 3 - Calculations with Chemical Formulas and Equations - Questions and Problems - Page 116: 3.3

Please see the work below.

We know that $1 mol\space N_2\times \frac{6.02\times 10^{23}}{1\space mol \space N_2}=6.02\times 10^{23}\space molecules \space N_2$ $6.02\times 10^{23}\space molecules N_2\times \frac{2atoms \space N}{1 \space molecule\space N_2}=1.2\times 10^{24}\space atoms N$