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Author Question: Pentaborane B5H9(s) burns vigorously in O2 to give B2O3(s) and H2O(l). Calculate Hrxn for the ... (Read 71 times)

Facerro

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on: Nov 5, 2023
Pentaborane B5H9(s) burns vigorously in O2 to give B2O3(s) and H2O(l). Calculate ΔHrxn for the combustion of 5.00 mol of B5H9.
         ΔH°f[B2O3(s)] = –1,273.5 kJ/mol
         ΔH°f[B5H9(s)] = 73.2 kJ/mol
         ΔH°f[H2O(l)] = –285.8 kJ/mol
◦ – 45,400 kJ
◦ 45,400 kJ
◦ – 22,700 kJ
◦ – 9,090 kJ
◦ – 8,790 kJ
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Marked as best answer by Facerro on Nov 5, 2023

Sha

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Reply #1 on: Nov 5, 2023
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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Facerro

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Reply 2 on: Nov 5, 2023
Gracias!

jomama

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Reply 3 on: Yesterday
Excellent

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