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Given the following heat of formation values, calculate the heat of reaction for:
C3H8( g ) + O2( g ) → CO2( g ) + H2O( l )
Δ Hf values in kJ/mol for: C3H8( g ) = − 103.8, O2( g ) = 0, CO2( g ) = − 393.5, H2O( l ) = − 285.8
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