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Hydrocarbons are part of fuels such as petrol, diesel and gaseous fuels such as paraffin gas.

They are released in the atmosphere whenever they are 'released' without being burnt! For example, petrol drips on to the forecourt at every refill and evaporates into the atmosphere.

An example from within an engine is when the spark plug ignites the fuel-air mixture, a tiny fraction of the mixture remains unburned and is released in the exhaust emissions.

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15y ago
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11y ago
  • Combustion of engine exhaust
  • Oil refineries
  • Oil fueled power plants
  • Evaporation from petroleum fuels
  • Solvents
  • Dry cleaning solution
  • Paints
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14y ago

Hydrocarbons are found in crude oil whick is black and thick. to find out how crude oil was formed look on the formation of oil

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7y ago

From bonding energy.

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Q: Where does the energy stored in hydrocarbons come from?
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Related questions

Where is energy stored in an unlit candle?

the energy stored in an unlit candle is chemical potential energy, and it is stored in the bonds between the atoms in the hydrocarbons (wax) that make up the candle.


Where does this energy come from once the hydrocarbons release a lot of energy when ignited?

This is the heat of combustion.


What type of energy is energy stored in gasoline?

Gasoline is a mixture of hydrocarbons. As gas is burned, the compounds are broken down into simplier compounds and the breaking of these compounds releases energy.


How did the solar energy get stored in the fossil fuels?

When the trees and vegetation were growing they took in solar energy through photosynthesis. This energy was stored in the plants as hydrocarbons. It remains there as the plants, over millions of years, become fossil fuels (coal, oil and natural gas).


Where does the energy that is stored in food come from?

sunlight


Where does the energy that is stored from food come from?

sunlight


Where does the energy come from to light a match?

Chemical energy, stored in the match.


Where does the energy for a rocket's liftoff come from?

Chemical energy, stored in the fuel.


Does diesel fuel come from renewable energy source?

No! Diesel is a product of hydrocarbons, which deposits are limited and therefore not renewable energy source.


Where does the energy come from in the fission process?

It is stored in the atom.


Where does the energy come from to make NADPHin the light reactant?

From the energy stored in light.


Where is the energy stored in gasoline before it is combusted?

As in all hydrocarbons the energy is stored in the covalent bonds that make the compound. The bonds between H-C and C-C The energy is released when these bonds break. The bonds are broken using a little incentive such as fire or a spark in the presence of oxygen.