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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One of the most enjoyable things about building something is getting to use all the cool tools. Builders use power saws, drills and electric sanders to turn raw materials into unique creations. Just like builders, scientists use tools to get the results they want. Scientific tools help scientists take precise measurements, carry out experiments and make observations.