Given the Following Reactions N₂ (G)+ O₂ (G)→ 2NO (G)ΔH

question 105

Multiple Choice

Given the following reactions N₂ (g) + O₂ (g) → 2NO (g) ΔH = +180.7 kJ
2N₂O (g) → O₂ (g) + 2N₂ (g) ΔH = -163.2 kJ
The enthalpy of reaction for
2N₂O (g) → 2NO (g) + N₂ (g)
Is ________ kJ.

• A)145.7
• B)343.9
• C)-343.9
• D)17.5
• E)-145.7

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Definitions:

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A metric in finance that reveals the percent of sales revenue that remains after deducting the cost of goods sold, illustrating the profit-making ability of a business.

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Costs that vary in direct proportion to changes in levels of output or activity, such as raw materials and direct labor.

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