#a million The balanced equation would be: 4 Al + 3 O2 --> 2 Al2O3 because of the fact the ratio of aluminum to aluminum oxide is two:a million, only multiply the moles of Al2O3 by ability of two to get the moles of Al necessary. #2 The reaction is between H2 and N2 to grant NH3. H2 + N2 --> NH3 To stability it, given which you have N2 on the left, you will form 2 NH3 on the perfect. that supplies you 6 H on the perfect, so which you would be wanting 3 H2 on the left. The balanced equation is: 3 H2 + N2 --> 2 NH3 So get to the respond, first convert the grams of H2 into moles by ability of dividing the the molar mass of H2. Then, use the coefficients of the equation to transform moles of H2 into moles of NH3. ultimately, use the molar mass of NH3 to transform moles of NH3 into grams of NH3.