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
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![**Question 3**
_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.
\[ 4 \text{Al}_{(s)} + 3 \text{O}_{2(g)} = 2 \text{Al}_2\text{O}_{3(s)} \]
\[
\Delta H^\circ = -\frac{1676 \text{ kJ}}{1 \text{ mole } \text{Al}_2\text{O}_3}
\]
a) What is the limiting reagent?
[Answer Box]
b) What is the theoretical yield (in grams) of Al₂O₃? (**three sig. figs.**)
[Answer Box]
c) What is the percent yield of Al₂O₃? (**three sig. figs.**)
[Answer Box]
d) How much excess material is left over (in grams)? (**three sig. figs.**)
[Answer Box]
e) How much energy (in kJ) is produced during the reaction? (**three sig. figs.**)
[Answer Box]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6bca0f7c-4a69-4d44-a0fc-404c8d0c241c%2Fa42983bb-36c7-43a5-9c0e-613f194a51a4%2Ff070yufh_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Question 3**
_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.
\[ 4 \text{Al}_{(s)} + 3 \text{O}_{2(g)} = 2 \text{Al}_2\text{O}_{3(s)} \]
\[
\Delta H^\circ = -\frac{1676 \text{ kJ}}{1 \text{ mole } \text{Al}_2\text{O}_3}
\]
a) What is the limiting reagent?
[Answer Box]
b) What is the theoretical yield (in grams) of Al₂O₃? (**three sig. figs.**)
[Answer Box]
c) What is the percent yield of Al₂O₃? (**three sig. figs.**)
[Answer Box]
d) How much excess material is left over (in grams)? (**three sig. figs.**)
[Answer Box]
e) How much energy (in kJ) is produced during the reaction? (**three sig. figs.**)
[Answer Box]
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