Chemistry - Mole Concept Question with Solution | TestHub

Number of moles of ${\mathrm{H}}_2=\frac{1}{2}=0.5$ Number of molecules of ${\mathrm{H}}_2=0.5{\mathrm{N}}_{\mathrm{A}}$. (1) Number of moles of ${\mathrm{N}}_2=\frac{14}{28}=0.5$ Number of molecules of ${\mathrm{N}}_2=0.5{\mathrm{N}}_{\mathrm{A}}$ (2) Number of moles of ${\mathrm{H}}_2\mathrm{O}=\frac{18}{18}=1$ Number of molecules of ${\mathrm{H}}_2\mathrm{O}=1\times {\mathrm{N}}_{\mathrm{A}}={\mathrm{N}}_{\mathrm{A}}$ (3) Number of moles of $\mathrm{CO}=\frac{16}{28}=\frac{4}{7}$ Number of molecules of $\mathrm{CO}=\frac{4}{7}{\mathrm{N}}_{\mathrm{A}}$ (4) Number of moles of ${\mathrm{N}}_2=\frac{28}{28}=1$ Number of molecules of ${\mathrm{N}}_2=1\times {\mathrm{N}}_{\mathrm{A}}={\mathrm{N}}_{\mathrm{A}}$