How many moles of hydrogen, H2, are needed to react with 2.75 moles of nitrogen, N2? 5.75 moles N2

Answer 1

Lets write a balanced equation for the reaction that is presumed to be N2 + 3H2 → 2NH3.

Now we need the conversion factor which is 3 x Mol. Mass H2 / 1 x Mol. Mass N2 = 3 x 2.016 / 1 x 28.014.

Factor = 0.216

Multiply the factor by the number of moles of nitrogen given to get the number of moles of hydrogen needed.

Remember, this assumes the reaction is as given above.