Dry air at 1 atm flows at 9 m/s across the surface of a 10-inch-long surface that is covered with a thin film of water. if the air and water are at 25 c and the diffusivity of water in air is 0.25 cm2/s, estimate the water flux in kmol/s*m2 for the evaporation of water at the middle of the surface, assuming laminar boundary-layer flow. air at 25c, viscosity 1.8 x 10-5 kg/m*s. vapor pressure of water 0.46 psia at 25 c =

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na

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