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Working with Enthalpy

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The reaction of 4.49 g of carbon and 9.21 g of oxygen, produced carbon dioxide, and 113.2 kJ of heat. What is the enthalpy of formation of carbon dioxide?

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All chemical reactions involve a change in enthalpy (defined as the heat produced or absorbed during a reaction at constant pressure)

The reaction is C(s) + O2(g) ---> CO2 (g) + 113.2kJ

Assume that the CO2 ...

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