Question

why do different types of coal have different composition

Answer 1

The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon, along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.

Answer 2

Answer:

Coal consists of a variety of substances with different chemical structures. The coal composition depends on the plant-based origin of the raw material and the coalification process. Hence, lignite can have variety of different properties.

Explanation:

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