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22) During volcanic eruptions, hydrogen sulfide gas is given off and oxidized by air according to the following chemical equation: 2H2S(g) + 3O2(g) → 2SO2(g) + 2H2O(g) Calculate the standard enthalpy change for the above reaction given: A) 443.3 kJ/mol B) 742.3 kJ/mol C) –742.3 kJ/mol D) –149.5 kJ/mol E) –1036.1 kJ/mol Is there a video on this one too? I have trouble with flipping the reaction and dealing with the different reaction/products.