Flashlight shining on the solar panel of the solar-powered toy Did you observe evidence that light carries energy?
(check one)
yes
no
Describe any evidence that you observed.
Flashlight shining on the liquid crystal paper
Did you observe evidence that light carries energy?
(check one)
Оyes
no
Describe any evidence that you observed
Thermometer left under the light
Did you observe evidence that light carries energy
1 yes
Describe any evidence that you observed

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.