What is the best description of the chromosomes by the end of metaphase of mitosis? a- the chromosomes separate at the centromere and begin to move apart b- the chromosomes reach opposite sides of the cell and begin to be incorporated into two new nuclei c- the chromosomes have coiled and become more compact d- the chromosome pairs collect in a line across the middle of the cell(20 )

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.