500kmol/h of a feed to a distillation column (stream 1] contains 70% methanol and 30% ethanol. 90% of the methanol in the feed [1] is recovered as the distillate from column 1
(stream 2] Given that the composition of methanol in stream [2] is 97%, and 99% of the remaining methanol in stream (3] is
removed as a distillate in stream [4]​

The answer should be c.

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

The total number of electrons is 14