1000 kg/h of a mixture of benzene (b) and toluene (t) that contains 50% w/w benzene by mass are separated by distillation into two fractions. the mass flow rate of benzene in the product top stream is 450 kg b/h and that of toluene in the bottom stream is 475 kg t/h. the operation is at steady state. write balances on benzene and toluene to calculate unknown component flow rate in the output streams

answer is a

explanation:

d

explanation:

the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

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