Which choice displays the effects of quantum mechanics? Check all that apply. atoms
subatomic particles
nanotechnology systems
particles that are 10–9 m
microtechnology systems
protons
neutrons
particles that are 10–3 m

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.