Which of the following solutions contains the smallest number of ions? a. 156.5 ml of 2.0 m iron(iii) chloride b. 521.4 ml of 1.0 m lithium nitrate c. at least two of the above contain the smallest number of ions. d. 297.1 ml of 1.0 m sodium sulfate e. 374.3 ml of 2.0 m potassium hydroxide.

The answer is letter c

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 .

Where is the illustration?

C: 6.94 is the correct answer