In other words, I want to find how many moles of each guy of each atom is in my compound. Now, eleven point 11 grams of h divided by the molecular or atomic weight of h 1 gram/mol gives me eleven point eleven moles of h.
Likewise, I do the same thing for oxygen. 88.89 grams of oxygen divided by the atomic weight for oxygen 16 grams/mol grams cancel and I get 5.56
mole. Now, I simply take this guy, the moles of my h, divide that by the moles of my oxygen and I get two, or approximately two. And this and this means that for every two moles of h, I have 1 mol of oxygen. And therefore, I could write my empirical formula in the following way.