After using the yum install command, you will be prompted for the computer's root password. Type in the root password and press 'Enter'. You will not see the password as you type. The terminal will start giving information about the application, and end with Is this ok [y/N]:.
While some of the compounds in the dirt and rock are the same in most coal, the carbon is combined here and there with hydrogen, oxygen, sulphur, nitrogen, phosporus and just about every other common element in small quantities. Imagine an extremely large net where the knots are carbon atoms.
Combustion occurs when fossil fuels are burned, and the elements in the fossil fuels oxidize, or combine with oxygen. When coal is burned, the carbon oxidizes to form carbon dioxide, or CO2. Similarly, nitrogen becomes nitrous oxide, or NO2, and sulfur becomes sulfur dioxide, or SO2. The mineral content found in coal and oil become ash.