A hygrometer, which measures the amount of moisture in a gas stream, is to be calibrated using the apparatus shown here: Steam and dry air are fed at known flow rates and mixed to form a gas stream with a known water content, and the hygrometer reading is recorded; the flow rate of either the water or the air is changed to produce a stream with a different water content and the new reading is recorded, and so on. The following data are taken: Steam and dry air are fed at known flow rates and mixed to form a gas stream with a known water content, and the hygrometer reading is recorded: the flow rate of either the water or the air is changed to produce a stream with a different water content and the new reading is recorded. and so on. The following data are taken: Suppose a sample of stack gas is inserted in the sample chamber of the hygrometer and a reading of R=12.7 is obtained. If the mass flow rate of the stack gas is 1050kg/h, what is the mass flow rate of water vapor in the gas? kg/h Attempts: 0 of 3 used