Water in an insulative evaporative cooler evaporates at the rate of 0.003 kg/s. Air flow rate 1 kg/s. What is the air temperature decreases if the specific heat of humid air is 1kJ/kg K and latent heat of water is 2500 kJ/kg?
(a) 2.50C (b) 3.00C (c) 7.50C (d) 100C