Answer:
Explanation:
Say you have 72 grams of oxygen and 28 grams of nitrogen
72 grams of oxygen is 72g / 16 g/mole = 4.5 moles of oxygen
28 grams of nitrogen is 28 g / 14 g/mole = 2 moles of nitrogen
So your formula starts to look like N2 O4.5
but you can't have fractions in the formula ....so multiply both of the subscripts by 2 to get
N4 O9 Done.
