A cell with N/50 KCl solution showed a resistance of 550 ohm at 25 degree celcius. The specific conductivity of N/50 KCl at 25 degree celsius is 0.002768 ohm/cm. The cell filled with N/10 ZnSO₄ solution at 25 degree celsius shows a resistance of 72.18 ohms. Find the cell constant and molar conductivity of ZnSO₄ solution.