If 12 mols of N2 and 12 moles of H2 are combined, what will exist (what will be left over) after the reaction is complete? N2+3H22NH3 Select one or more: a. 8 moles of N2 and 24 moles of NH3 b. 12 moles of H2 and 24 moles of NH3 6. 6 moles of N2 and 6 moles of NH3 d. 5 moles of H2 and 8 moles of N2 e. 8 moles of N2 and 8 moles of NH3