What we do need is a knowledge of coal's elemental analysis. In other words, we need to know only how much carbon, hydrogen, sulfur, oxygen and nitrogen there is in a given coal. A typical elemental analysis of a bituminous coal is as follows: 82% carbon, 5% hydrogen, 1% nitrogen, 3% sulfur, 9% oxygen.
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Design tool. The pencil is one of the most basic and most popular graphic design tools. Design tools are objects, media, or computer programs, which can be used to design. They may influence the process of production, expression and perception of design ideas and therefore need to be applied skillfully. Contents.