# Chemistry AS DF CI 4.1

- Created by: A.B.
- Created on: 30-11-13 14:21

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- DF Hess Cycles CI 4.1
- Hess's law
- As long as the starting and finishing points are the same, the enthalpy change will always be the same no matter how you go from start to finish.

- Enthalpy Cycles
- If an equation is reversed, the sign for delta H is also reversed.
- Multiply delta H by the number of moles in the equation.

- Hess's law

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