Do the different types of coal (such as anthracite, lignite, and bituminous) have different amount of energy?

Answer 1

Yes, in general as the rank of the coal increase, so does the energy content - at least to a point.

The energy content of coal tends to increase as its rank increases as over time the carbon content increases per volume of coal and water tends to get squeezed out in the coalification process The Heating Value in the attached diagram shows this effect.

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Answer 2

Connor Anderson

Cola of different types contains different things at different ratios.

coal contain ash.It may vary from 5% to 40 in some coal like lignite, Calorific value the index which indicate heat value changes. In addition to carbon and hydrogen coal also contain sulfur .nitrogen and other things. Ash does not produce heat.

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Answer 3

Roman Acosta

Yes, different types of coal have varying energy content. Anthracite has the highest energy content, followed by bituminous and lignite with progressively lower energy levels.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.