Ahydrocarbon feed consist of a mixture of propane [c3h8] (20 mol%), isobutene [c4h10] (30 mol%), isopentane [c5h12] (20 mol %) and n-pentane [c5h12] (30 mol%) is fractioned at a rate of 100 kg/h into a distillate that contains all the propane and 78% of the isopentane in eng142 concepts of chemical engineering the feed. the mole fraction of isobutane in the distillate is 0.378. the bottom stream contains all the n-pentane feed to the unit. a) develop a block diagram of the process. (5 marks) b) calculate the flow rate at the bottom stream. (30 marks) c) on a table show the material balance of the unit.

Listenbase your answer to the question on the information below. nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. an external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body. cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. one hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment. which choice represents the correct product for the beta decay of the co-60? fe-60ni-60fe-61ni-61