Afeed of 90% r and 10% q enter a system containing a recycle stream and a purge stream, as well as a reactor and a separator. the material entering the reactor undergoes the reactions: conversion in the reactor is 40%. the separator is able to remove all a and b from any remaining r and q: the stream containing only a and b is 75% a. the stream from the separator containing r and q is split into the recycle stream (which feeds back into the system before the reactor) and the purge stream, at a ratio of 4 moles recycled /moles purged. all compositions are in mole percent. determine the moles of each species leaving the process.

In a laboratory determination of the atomic weight of tin, a sample of tin is weighed in a crucible. nitric acid is added, and the reaction proceeds to give a hydrated tin(iv)oxide plus no2and h2o. the hydrated tin(iv)oxide is then heated strongly and reacts as follows: sno2.xh2o(s)sno2(s)+ xh2o(g)the sno2is finally cooled and weighed in the crucible. explain the effect on the calculated atomic weight of tin that would result from each of the following experimental errors: (a)considerable spattering occurs when the nitric acid is added to the tin.(b)the hydrated tin(iv)oxide is not heated sufficiently to change it completely to tin oxide.