What relationship does Charles's law describe? A. The relationship between temperature and volume
B. The relationship between moles and temperature
C. The relationship between pressure and volume
D. The relationship between volume and moles
SUBMIT

Charles's law, a statement that the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature, if the pressure remains constant. Thus, the answer would be A because it talks abt the volume and the temp. Help this helps.

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 .