If I have 2.4g of magnesium, how many g of oxygen(O 2 ) will I need to react completely with the magnesium? 2Mg +O 2  MgO

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2