N₂ + 3H₂ --> 2NH₃

If 207.0 g of H₂ reacts, what mass of NH₃ is produced?

Its strengthits conductivity of heat and electricity its shiny colourmalleable and ductility

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 .