**Calculating the Heat Energy Transferred:**

- This is used for the combustion experiment on the other side.
- If you measure the amount of fuel that was burnt and the temperature change of the water, you can work out how much heat energy was given off by burning 1 gram of fuel.
- It takes 4.2joules of energy to heat 1 gram of water by 1 degree.

**Calculating the Molar Enthalpy Changes:**

- Once you've calculated the amount of energy transferred, you can calculate the molar enthalpy change (the amount of energy given out by one mole of the reactant).

1) Calculate the amount of energy transferred from the reaction.

2) Find out how many moles of fuel produced this heat.

3) Divide the amount of energy by the number of moles to work out how much energy is produced from one mole of fuel.

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