Andre added 25mL of water to 75mL of a 5.0M stock solution to make 10 points
100mL of a new solution. The concentration of the new solution will be
_than the stock solution. *

Ais the correct answer

It shows that the experiment is designed properly.

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 .