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.
This type of coal contains 20-30% moisture and can be used for heating or generating electricity.- Bituminous coal. A soft, dense and black coal. Bituminous coal is the most common coal and has a moisture content of less than 20%. This type of coal is usually used for generating electricity and heating in the home. - Anthracite coal. Also known as hard coal, this type of coal is hard and black. Anthracite is high in carbon and low in sulphur, with a moisture content of less than 15%. Anthracite is a naturally occurring smokeless fuel and is used in solid fuel cookers and boilers.