If 1.00g of barium metal is heated in a stream of pure oxygen gas, 1.112 mg of an oxide is produced. Calculate the empirical formula of the oxide.

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 .

A.(nh4)(2co3)is the correct answer 

The number of medals awarded to the track team during the season.