In the Presence of Excess Oxygen,methane Gas Burns in a Constant-Pressure

question 140

Multiple Choice

In the presence of excess oxygen,methane gas burns in a constant-pressure system to yield carbon dioxide and water: (g) + (g) → (g) + O(l) ΔH = -890.0 kJ Calculate the value of q (kJ) in this exothermic reaction when 1.70 g of methane is combusted at constant pressure.

• A) -94.6 kJ
• B) 0.0306 kJ
• C) -0.0106 kJ
• D) 32.7 kJ
• E) -9.46 × 10⁴ kJ

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