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28 g soil sample was heated to a constant weight of 24 g. When further heated to...


Question

28 g soil sample was heated to a constant weight of 24 g. When further heated to red hot and cooled, it weighed 18 g. What is the percentage of humus in the soil?

Options

A)
22.2
B)
55.6
C)
75.0
D)
25.0
E)
35.7

The correct answer is A.


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