A sample of water from a water tank has a resistance of 100 at 298...

A sample of water from a water tank has a resistance of $100 \Omega$ at 298 K , when placed in a conductivity cell of cell constant $0.2 \mathrm{~m}^{-1}$. On dissolving 58.5 g of NaCl in the water tank, a sample of this solution gave a resistance of $40 \Omega$. The molar conductivity of NaCl at this concentration is $10 \Omega^{-1} \mathrm{~m}^2 \mathrm{~mol}^{-1}$. The volume of water in the water tank is