Procedure:
1. Pour 50mL of water into the first aluminum can
2. Place the can 7cm above the ground on the ring stand
3. Place the Logger Pro inside of the can
4. Light the spirit burner of the fuel under the can.
5. Close the container around the ring stand and the spirit burner
6. Stir the Water inside of the can constantly.
7. Record the temperature of the water for 3 minutes.
8. Repeat the steps for each type of fuel.
9. Find the number of kilojoules released by each of the fuels
10. Find the amount of kilojoules of each fuel when there is 1 liter of that fuel.
11. Divide the amount of kilojoules/litre by the cost/litre of each fuel.
12. Choose the fuel with the most kilojoules released per litre.
Data Collection and Processing:
Ethanol:
Measuring the Mass of Ethanol
Measuring Temp. of Ethanol
Methanol:
Measuring the Mass of Methanol
Measuring Temp. of Methanol
Butanol:
Finding the Energy Released by The Fuels (Q = m x C x ∆T)
Step 1: Finding the ∆T (change in temperature)
- ∆T= ending temperature – starting temperature
Step 2: Finding the Heat Capacity of Water (C )
- Heat capacity of water = 4.18 J/g
Step 3: Find the mass of water
- Each can had 50mL of water
- 1mL = 1 g
- Each can had 50 g of water
Energy released by Ethanol:
Q= 50 x 4.18 x 69.2
Q= 14.5 kilojoules
Energy Released by Methanol
Q= 50 x 4.18 J/g x 35.8
Q= 7.5 kilojoules
Energy Released by Butanol:
Q= 50 x 4.18 J/g x 21
Q= 4.4 kilojoules
Energy Released by ethanol per ringitt:
Kilojoules/litre = 11153.8
Energy Released by Methanol per ringitt:
Kilojoules/litre = 5769.2
Energy Released by Butanol per ringitt:
Kilojoules/litre = 14666.7
