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  3. a surface soil in good condition for plant growth may...

Question: a surface soil in good condition for plant growth may...

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  1. A surface soil in good condition for plant growth may have the following volume fractions: mineral matter 0.46, organic matter 0.04, soil water 0.1, and soil air 0.4. Assume the density of air is 1.3 kg m-3, the density of minerals is 2,700 kg m-3, the density of organic matter is 1,300 kg m-3, and the density of soil water is 1,000 kg m-3. Consider 1 m3 of this surface soil.
  1. a) What is the total volume fraction of the pores in this surface soil?
  2. b) What is the volume fraction of liquid phase required to saturate the soil?
  3. c) What is the mass of water required to saturate it?
  4. d) What is the mass of air in it when completely dry?
  5. e) What is the mass of the solid phase?
  6. f) What is the mass of the soil when it is saturated?
  7. g) What is the mass of wet soil when the volume fraction of liquid phase is only 0.25?
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