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Author Question: You heat 3.886 g of a mixture of Fe3O4 and FeO to form 4.095 g Fe2O3. The mass percent of FeO ... (Read 137 times)

madam-professor

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on: Mar 21, 2021

Question 1

wPCl5 + xH2O → yPOCl3 + zHCl

The above equation is properly balanced when:


◦ w = 1, x = 2, y = 2, z = 4
◦ w = 2, x = 2, y = 2, z = 2
◦ w = 2, x = 2, y = 2, z = 1
◦ w = 1, x = 1, y = 1, z = 2
◦ none of these are correct

Question 2

You heat 3.886 g of a mixture of Fe3O4 and FeO to form 4.095 g Fe2O3. The mass percent of FeO originally in the mixture was

◦ 94.9%.
◦ 26.1%.
◦ 73.9%.
◦ 18.0%.
◦ None of these are correct.
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
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Marked as best answer by madam-professor on Mar 21, 2021

ttt030911

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Reply #1 on: Mar 21, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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AHolt40

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Reply #2 on: Mar 26, 2021
Thanks


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