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Styrene, C8H8, is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at 25°C, 42.15 kJ are released per gram of styrene. Find the standard enthalpy of formation of styrene at 25°C.ΔH°f(CO2(g)) = -393.5 kJ/mol, ΔH°f(H2O(l)) = -285.8 kJ/mol
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