Final answer:
The energy produced from one tank of fuel assuming it is all octane is 130 MJ or 130,000 kJ.
Step-by-step explanation:
To calculate the energy produced from one tank of fuel assuming it is all octane, we need to know the energy content of octane. According to the information given, a gallon of gasoline contains about 130 MJ of chemical energy at a mass of around 3 kg. However, the question asks for the energy produced from one tank of fuel, so we need to calculate the energy content for one tank. Assuming the tank is a gallon in size, the energy content would be 130 MJ.
To convert this energy to kilojoules (kJ), we can use the conversion factor 1 MJ = 1,000 kJ. Therefore, the energy in kilojoules from one tank of fuel is 130,000 kJ.