A thin plate of solid salt, NaCl, measuring 15 by 15 cm, is to be dragged through seawater at a velocity of 0.6 m/s. The 291 K seawater has a salt con- centration of 0.0309 g/cm³ and a density of 1.022 g/cm³. Estimate the rate at which the salt goes into solution if the edge effects can be ignored. Assume that the kinematic viscosity at the average liquid film conditions is 1.02 × 10- m²/s, and the diffusivity is 1.25 x 109 m²/s. The solubility of NaCl in water at 291 K is 0.35 g/cm³, and the density of the saturated solution is 1.22 g/cm³ A gas absorber is used to remove benzene (CH) vapors from air by scrubbing the gas mixture with a nonvolatile oil at 300 K and 1 atm. At a cer- tain point in the absorber, the benzene mole fraction in the bulk of the gas phase is 0.02, while the corresponding interfacial benzene gas-phase concen- tration is 0.0158. The benzene flux at that point is measured as 0.80 g/m²-s. (a) Calculate the mass-transfer coefficient in the gas phase at that point in the equipment, expressing the driving force in terms of mole fractions. (b) Calculate the mass-transfer coefficient in the gas phase at that point in the equipment, expressing the driving force in terms of molar concentrations, kmol/m³. Given that RT- KAT