And wher does it go...
about 2 tons per year
1
Assuming that coal is essentially pure carbon, each 12 kg of coal will combust to form 44 kg of carbon dioxide (C+O2 -->CO2) a bit more than 3 times as much carbon dioxide as coal. A ton of carbon will burn to form about 3 tones of carbon dioxide.
There is no difference. Graphite is the highest grade of coal. It requires a much higher temperatre to burn though so it isn't used as a fuel.
Yes, coal is very much still in use. Many power plants burn cola to produce electricity, particularly in under developed countries with growing economies. China is one of the largest users right now.
It used 620 tons.
And wher does it go...
about 2 tons per year
1
Coal is not renewable within our life times. Much of the coal we burn today formed during the Permian, some 300 million years ago.
Assuming that coal is essentially pure carbon, each 12 kg of coal will combust to form 44 kg of carbon dioxide (C+O2 -->CO2) a bit more than 3 times as much carbon dioxide as coal. A ton of carbon will burn to form about 3 tones of carbon dioxide.
The key to a hot fire is not how much you burn, but WHAT you burn. Coal makes some of the hottest fires. A slower-burning fuel like diesel or kerosene will also help. Try to pack the material to be burned as much as possible; the reason coal is effective is because it is a very dense collection of carbon.
30 each
Because they have so many factories, the most in the world
There is no difference. Graphite is the highest grade of coal. It requires a much higher temperatre to burn though so it isn't used as a fuel.
I don't have the answer