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.
Gas inside the coal. Hydrocarbon gases are formed in coal beds during the coal matter metamorphism process, i.e. changing of its structure, properties, and composition under exposure to temperature and pressure. Their main component is methane, whose concentration in the mixture reaches from 80 to 98 per cent.