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Rank the volumetric energy density (J/L) of the following transportation fuels from low to high (1= lowest and 4 = highest). Hint you will need to think about the CNG one - the answer is not directly stated in the lecture.

a. Compressed natural gas.
b. Diesel.
c. Ethanol.
d. Gasoline

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Answer:

Explanation: Volumetric energy density is the calculation of how much energy is contained in a system compared to its volume expressed in Megajoules per liter.

Listed below are transport fuels from lowest to highest:

1. Compressed natural gas - 9MJ/L

2. Ethanol - 24MJ/L

3. Gasoline - 34.2 MJ/L

4. Diesel - 38MJ/L

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