Question

consider the following reaction:
2CH3OH(g) yields 2CH4(g) + O2(g) change in enthalpy= 252.8kJ

How many kilojoules of heat are released when 38.4 g of CH_4 g) reacts completely with O2 (g) to form CH3OH (g) at constant pressure?
252.8 kJ x (38.4/2*molar mass CH4) = ?
247

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