Question

number of 5.6 g molecules in nitrogen ?

Answer 1

Dear User,
$$\begin{gathered} \mathrm{Number}\mathrm{of}\mathrm{molecules}\mathrm{in}1\mathrm{g}\mathrm{of}{\mathrm{N}}_2=\frac{\mathrm{Given}\mathrm{mass}\times 6.023\times {10}^{23}}{\mathrm{Molar}\mathrm{mass}}=\frac{6.023\times {10}^{23}}{28} \\ \mathrm{Therefore},\mathrm{Number}\mathrm{of}\mathrm{molecules}\mathrm{in}5.6\mathrm{g}\mathrm{of}{\mathrm{N}}_2=\frac{5.6\times 6.023\times {10}^{23}}{28}=1.2046\times {10}^{23}\mathrm{molecules} \end{gathered}$$