5 g of oven dried soil was heated in a furnace for 24 hours. After cooling, it weighed 4.8 g. What is the amount of humus in the soil?
-
A.
40.0g per 100 g dry soil -
B.
4.4g per 100g dry soil -
C.
4.0 g per 100g dry soil -
D.
0.4g per 100g dry soil
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