Aliquid-process feed stream contains 99 mol-% of species 1 and 1 mol-% of impurity, species 2. the impurity level is to be reduced to 0.1 mol-% by contacting the feed stream with a stream of pure liquid solvent, species 3, in a mixer-settler. species 1 and 3 are essentially immiscible. owing to “good chemistry”, it is expected that species 2 will selectively concentrate in the solvent phase. (a) what is the mole fraction x2 of the impurity in the solvent phase leaving the mixersettler? (b) determine the required moles of solvent ns per mole of feed.

The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.