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Author Question: In the presence of excess oxygen, methane gas burns in a constant-pressure system to yield carbon ... (Read 103 times)

shenderson6

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on: Jul 8, 2021

Question 1

If 356 J of work is done by a system while it loses 289 J of heat, what is the value of
◦ +645 J
◦ -645 J
◦ +67 J
◦ -67 J
◦ +134 J

Question 2

In the presence of excess oxygen, methane gas burns in a constant-pressure system to yield carbon dioxide and water:

CH4 (g) + 2 O2 (g) → CO2 (g) + 2 H2O (l) ΔrH = -890.0 kJ

Calculate the value of q (kJ) in this exothermic reaction when 1.90 g of methane is combusted at constant pressure.
◦ -105.7 kJ
◦ 0.0342 kJ
◦ -0.0095 kJ
◦ 29.3 kJ
◦ -1.06 × 105 kJ
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by shenderson6 on Jul 8, 2021

yasmina

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Reply #1 on: Jul 8, 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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shenderson6

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Reply 2 on: Jul 8, 2021
Gracias!

xiaomengxian

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Reply 3 on: Yesterday
Wow, this really help

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