For a water droplet vaporizing in dry air at atmospheric pressure with T\infty = 372K and Ywater−vapor,\infty = 0, find the droplet surface temperature Ts and the non-dimensional evaporation rate ˜˙m = m˙ evap 4\pi rs\rho DAB if the pressure is (a) 1 atm, (b) 5 atm. Take qv = 540 cal/g, cP = 0.3 cal/gK, and Wair = 29 kg/kmol. Assume Le = 1.