am2 CHE Spring 201 No credit will be given for illegible or amabigos wk Exam 2, CHEM 141 NAME March 7, 2018 Spring 2018, Jackson State University 4. (8 points) Determine the limiting reactant (L.R) and the theoretical yields (in moless0 can be formed from 50.0 moles NH; and 45.0 moles O2 5. (5 points) In an experiment, 28.65 g of Fe is produced when 50.00 g of Fe203 reacts with excess Mg according to the following reaction. What is the percent yield of Fe? [Molar mass of Fe:0, is 159.70 g mol']. Fe203(s) + 3 Mg(s) â 3Mg0(s) + 2 Fe(s)