How many moles of hydrogen, h2, are needed to react with 4.0 moles of nitrogen, n2

6 moles because you start with a balanced equation and with the balanced equation it means that regardless of how many miles of nitrogen gas you have, the reaction will always consume twice as many miles if hydrogen gas.

sry but any answer choices

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >