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How does the hardness of coal affect how it works in fuel?
(Mohs Hardness Scale)

User Galit
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Answer:In a coal deposit, which is heating up the concentration of hydrocarbons, together with the concentrations of carbon monoxide and hydrogen, increase, followed by an increase in temperature, and decrease as the temperature decreases

Step-by-step explanation:

User Wootscootinboogie
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