A packed column is used to separate ammonia from air using water. At a particular point in the column, the mole fractions of ammonia in the bulk of the gas and liquid phases are 0.21 and 0.006 respectively. The film coefficients are ky = 0.00064 kmol m-2 s-1 and kx = 0.0023 kmol m-2 s-1. If the gradient of the equilibrium curve at this particular point in the column is taken as 2.6, what is the overall mass transfer coefficient (based on the gas phase) in kmol m-2 s-1, to 6 decimal places e. g. 1.234567? Please provide your answer using standard notation (i. e. 1.234567) and not scientific notation (i. e. 123.4567E-2)