When someone says calories about food, they mean kilocalories. So the answer you want is kJ divided by 4.184, and the small calorie is 1,000 times that. Quick answer: divide the kilojoules by 4.184 to get food Calories (kcal). For example, 100 kJ is 23.9 kcal, 1,500 kJ is 358.5 kcal and 2,000 kJ is…
You cannot turn kJ into kW with a single number. Energy needs a time, and the sum is power equals energy divided by time. Quick answer: divide the kilojoules by the seconds. For example, 7,200 kJ in 3,600 s is 2 kW, 5,000 kJ in 100 s is 50 kW and 1,000 kJ in 60…
A table gives energy for a mole, but a plant or a fuel tank deals in kilograms. You change one to the other with the molar mass. Quick answer: multiply the kJ/mol by 1,000, then divide by the molar mass in g/mol. For example, 40.65 kJ/mol of water is 2,256.5 kJ/kg, 890 kJ/mol of methane…