One liter of nitrogen combines with 3 L of hydrogen
to form 2 L of ammonia. If the molecules of nitrogen
and hydrogen have two atoms each, how many atoms of
hydrogen and nitrogen are in one molecule of ammonia?
The Attempt at a Solution
I didn't know where to start so I looked at the solution key and got this:
The number of liters tells us how many molecules of the original combine to form this number of molecules of the product. Using these numbers as multipliers in a chemical equation gives us
1N2 + 3H2 → 1Nx Hy
Making sure that we have the same number of atoms of each kind on each side, we get x = 1 and y = 3.
Can somebody explain to me what the hell just happened?