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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These 10 facts about space will blow your mind. A carpenter is an important part of any construction team. He or she has the skills and knowledge to cut, fasten, carve, and design objects made of wood or other materials. These individuals are gifted in measuring precisely, sometimes called carpentry math, and know how to use different construction tools like saws, drills, small hand tools, and a variety of mechanized tools.