Asample of a pure compound containing c, h, and n, weighing 1.00 g, yields 2.84 g of carbon dioxide and 0.677 g of water when it reacts with excess oxygen. what is the simplest formula of the compound?

I need to know the answer of the above question.

So the main goal for the elements is stability which is a complete/full valence shell and typically the magic number for a stable element is 8 valence electron but not always. so elements to the left of the periodic table tend to be way less stable then those on the right, so the elements on the left are much more reactive.