Fe2o3+2al=al2o3+2fe a welder has 1.873 × 10^2 g fe2o3 and 94.51 g al in his welding kit. which reactant will he run out of first? (options: fe2o3 or 's fe2o3). how much of this reactant should he order to make sure he runs out of both reactants at the same time? he should order of the limiting reactant.