Mineral matter content (M) and ash content A. in coal are approximately related as _______________?
Correct answer: A. M = 1.1A
- A. M = 1.1A
- B. M = A
- C. M = 1.5A
- D. M = 2A
Explanation
Coal ash is approximately 90% of its mineral matter, so mineral matter is estimated as A divided by 0.9, or about 1.1A. Hence, M = 1.1A.
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