A student dissolved 28.20 g of CuNO3, in enough water to make 50.00 ml. of stock solution. He took 5.80 ml of the stock solution and then diluted it enough water to give 20.00 mL of a final solution. What is the molar concentration of the dilution? Record your answer with 3 decimals.

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 .