Astudy by the environmental protection agency looked at the costs and benefits of the clean air act from 1970 to 1990. this study found that a middle-range estimate of the health and other benefits from cleaner air was $22 trillion. this amount was about than the costs of reducing the pollution. a. 10 times lower b. 44 times higher c. 10 times higher d. 44 times lower

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.