The number of hydrogen atoms present in 5.4 g of urea is: (Given: Molar mass of urea: 60 g mol^-1, N A: 6.022 × 10^23 particles mol^-1 )

The number of hydrogen atoms present in $\displaystyle 5.4 \mathrm{~g}$ of urea is : (Given : Molar mass of urea : $\displaystyle 60 \mathrm{~g} \mathrm{~mol}^{-1}$, $\displaystyle \mathrm{N}_{\mathrm{A}}: 6.022 \times 10^{23}$ particles $\displaystyle \mathrm{mol}^{-1}$ )