Predict the products and write a balanced net ionic equation for the following reactions: a. zinc dust is treated with dilute nitric acid, forming ammonium ions. b. potassium permanganate oxidizes the oxalate ions in calcium oxalate to carbon dioxide in an acidic solution. c. tin(ii) chloride is added to potassium permanganate solution in acidic conditions.

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 .

I’m really not sure what’s the answer. sorry