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

question 140

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In the presence of excess oxygen, methane gas burns in a constant-pressure system to yield carbon dioxide and water: CH4 (g) + 2O2 (g) → + CO2(g) + 2H2O (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.


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