A fluid stream that has a flowrate of 48 kgmol/hr contains 23 mole % A , 18,2 mole % , B and water. The molecular masses of A and B are 20 and 40 respectively. calculate the mass flowrate of B?​

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 .