What mass of NaCl can be dissolved in 100g of water at 50c? what mass of KNO3 can be dissolved in 200g of water in 20c?

Oh nskskakaaka

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 .