Answer:
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen. Hope this helps.
Answer:
coal contains Carbon, hydrogen sulfur, oxygen and nitrogen.
Explanation:
We use it as a fuel in power plants.industrial furnaces.domestic cooking etc.
It is mostly used in huge boilers to make steam and used for electrical power generation
