Two oil tanks are connected to each other through a manometer. If the difference between the mercury levels in the two arms is 78 cm, determine the pressure difference between the two tanks. The
densities of oil and mercury are 780 kg/m3
and 13600 kg/m3
, respectively.

H tricky one let me think and get back to u

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m