NEET-XII-Physics
qstns with ansrs year:2022
- #37The volume occupied by the molecules contained in `` 4.5\, kg `` water at STP, if the intermolecular forces vanish away is :
(A) `` 5.6 \,m ^{3} ``
(B) `` 5.6 \times 10^{6} m ^{3} ``
(C) `` 5.6 \times 10^{3} m ^{3} ``
(D) `` 5.6 \times 10^{-3} m ^{3} ``digAnsr: AAns : `` V = `` (no. of moles) `` (22.4 `` litre)
`` =\frac{\text { mass }}{\text { molar mass }}\left(22.4 \times 10^{-3} m ^{3}\right. `` )
`` =\frac{4.5 \times 10^{3}}{18} \times 22.4 \times 10^{-3} m ^{3} ``
`` =5.6 \,m ^{3} ``