2 Mg + O2 --> 2MgO What is the greatest amount of MgO (in moles) that can be made with 7.8 moles of Mg and 4.7 moles of O2? Next, convert 4.7mol O2 to mol MgO. How many moles of MgO are produced with 4.7 mol of O2? (Answer a numerical value only) *