For the following questions do not include units in the answer. When 5.00 g Al (M.W. = 26.98 g/mole) react with 5.00 g O₂ (M.W. = 31.98 g/mole), 7.83 g of Al2O3 (M.W. = 101.96 g/mole) are recovered. a) What is the limiting reagent? 4 Al(s) + 3 O2(g) = 2 Al₂O3(s) AH = 1676 kJ 1 mole Al2O3 b) What is the theoretical yield (in grams) of Al2O3? (three sig. figs.) c) What is the percent yield of Al2O3? (three sig. figs.) d) How much excess material is left over (in grams)? (three sig. figs.) e) How much energy (in kJ) is produced during the reaction? (three sig. figs.)

For the following questions do not include units in the answer. When 5.00 g Al (M.W. = 26.98 g/mole) react with 5.00 g O₂ (M.W. = 31.98 g/mole), 7.83 g of Al2O3 (M.W. = 101.96 g/mole) are recovered. a) What is the limiting reagent? 4 Al(s) + 3 O2(g) = 2 Al₂O3(s) AH = 1676 kJ 1 mole Al2O3 b) What is the theoretical yield (in grams) of Al2O3? (three sig. figs.) c) What is the percent yield of Al2O3? (three sig. figs.) d) How much excess material is left over (in grams)? (three sig. figs.) e) How much energy (in kJ) is produced during the reaction? (three sig. figs.)

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter3: Mass Relations In Chemistry; Stoichiometry

Section: Chapter Questions

Problem 54QAP: Ammonia reacts with a limited amount of oxygen according to the equation...

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