Question

Two kg mass of air at 40 °C with 0.023 kg water vapour per kg dry air is mixed with 3 kg mass of
air at 20 °C with 0.008 kg water vapour per kg dry air to produce 5 kg mass of air at 60% relative
humidity at 28 °C. Assume all the streams are at normal atmospheric pressure (101.325 kPa). The
saturation vapour pressure of water in kPa at 28 °C is_____.

Answer 1

Newton's second law of motionpertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.