A balloon, inflated in an air conditioned room at 27°c , has a volume of 4.0L. It is heated to a temperature of 57°c. what is the new volume of the balloon?

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 .

Rn in the right answer