Why isn't propyne call 1-propyne, but heptene is called 3-heptene

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.