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The amount of CO2 generated from electricity (kWh) is dependant upon the way the electricity is generated. Burning a barrel of oil to produce electricity yields far more CO2 than generating the same amount of electricity from wind or water. One should contact their electricity provider to get a break-down of how the electricity is generated.
Oil is slightly less dense than water and a litre of water weighs a kilogram. It would be less than a kilogram, but by how much depends on the type of oil.
A liter of water IS a kilogram. Since oil is lighter, it's about .625 kg
oil
In science , Dense refers to the "heavier" object . For example , You know how oil and water don't mix ? And do u notice how the oil floats to the bottom ? The reason why is because the oil has a higher density than water . It's kindof confusing , huh??