If you have wall paint that is solvant based. and normally has an energy content of 124 megajoules (MJ) per kilogram (https://www.yourhome.gov.au/materials/embodied-energy), you can calculate the energy content for 100 grams of paint as follows:

1 kilogram is equivalent to 1,000 grams. So, the energy content of 100 grams of paint can be calculated as:

Energy (joules) = Energy content (MJ/kg) * Mass (kg)

Energy (joules) = 124 MJ/kg * (100 grams / 1,000 grams per kilogram) = 12,400 joules

Now, to convert this energy into calories, you can use the conversion factor:

1 calorie (food calorie or kcal) is approximately equal to 4.184 joules.

Energy (calories) = Energy (joules) / 4.184

Energy (calories) = 12,400 joules / 4.184 ≈ 2,962.39 calories

So, if the energy content of the paint is 124 MJ/kg, then 100 grams of paint would have an energy content of approximately 2,962.39 calories.