The waves with the longest wavelengths in the electromagnetic spectrum are
a. infrared rays.
b. x-rays.
c. gamma rays.
d. radio waves.

Asystematic approach to problem solving is called a (an)

Ways that industry and agriculture use physical properties to separate substances

8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.