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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Mod-making tools are a variety of construction sets for creating mods for a game. Early commercial mod-making tools were the Boulder Dash Construction Kit (1986) and The Bard's Tale Construction Set (1991), which allowed users to create game designs in those series.ods can help to continue the success of the original game, even when the original game has become dated. In that case, players might have to clarify that they are referring to the unmodified game when talking about playing a game. The term vanilla is often used to make this distinction.