f Al2O3 is produced, but then how is .25 mol of Oxygen left over? I know that with ratios the answer probably makes sense, I'm just missing that one step because I don't know what to multiply with what.
only know how to multiply small number and even that takes me a while to do and I know how to do subtraction and add but I dont know how to do division so I really need you help see you at 3:30