Two compound samples are composed of the same elements, but in different proportions. what can you conclude about the 2 samples?

Two compound samples are composed of the same elements but in different proportion, it means the two samples are two different compounds.

Because there are many compound which consist of same elements. for example water and hydrogen peroxide are two different compounds but these compounds consist if same elements, hydrogen and oxygen;

H₂O consist of hydrogen and oxygen and it is water
H₂O₂ also consist of hydrogen and oxygen but it is hydrogen peroxide
So, both are different compounds

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 .