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When A dry soil sample has a volume of 500 mL After 400 mL of water are added to the soil the soil becomes saturated with 150 mL of surface water left on top What is the porosity of the soil?
Wiki User
∙ 12y ago
the porosity is 50%
Wiki User
∙ 12y ago
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A soil sample with large amount of space between the particles will have a?
high porosity
What are 5 things that a soil sample will tell you?
Porosity, nitrogen levels, phosphorus level, composition (is it made of clay, sand or silt?), pH level.
PROBLEM EA Sample of moist soil has a water content of 20.0% and the moist unit weight of 21.09 KN/cu.meter. The specific gravity of the soil is 2.75. Compute the degree of saturation and the value of porosity?
two seconds
What is the color of the mark made when a mineral sample is rubbed on a harder surface?
The mark is called a streak and the color depends on what mineral you are testing.
Why saturated KCL in DNA extraction is used?
Saturated KCl precipitation is often used in DNA extraction for molluscan taxa. Molluscs produce a polysaccharide rich mucus that interferes with the reagents involved in DNA extraction. The KCl saturated solution is used right after the digestion step: about 1/4th of the volume of the digestion solution is added to the sample. Samples are then centrifugated at 14rpm for 15 minutes. The pellet formed will contain the polysaccharides and non digested tissue. The supernatant is extracted from the tube and used in the next steps of the DNA extraction.
A dry soil sample has a volume of 500 mL. After 400 mL of water are added to the soil the soil becomes saturated with 150 mL of surface water left on top. What is the porosity of the soil?
the porosity is 50%
How can porosity be measured?
Porosity is measured by taking a sample of the soil. The sample is then tested to measure the speed of water passing through the soil.
PROBLEM FA sample of soft saturated clay weighs 350 grams and has a volume of 205cc. After oven drying, the soil weighs 225 grams. Calculate the values of saturated unit weight, void ratio, porosity and specific gravity?
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A soil sample with large amount of space between the particles will have a?
high porosity
How would the determination of bulk specific gravity of fine aggregate (Saturated Surface Dry basis) affected by the 500gm sample being drier than the surface-dry condition Explain that the aggregate?
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What factors affect porosity?
The larger the particle size, the higher the porosity. Also keep in mind that angular particles have a higher porosity than round particles. *Good way to remember porosity is that the spaces between particles are "pore-like."
How do you calculate the porosity for rhombohedral packing?
Porosity= Volume of void space/ Total volume of the solidThis is a good way for soil, If you have the initial volume of the soil then all you have to do to find the void space is saturate it with water. As long as you know the weight different between before and after saturation you can find the void space because we know that water's density is about 1g/cm^3.So,Porosity= ((mass of saturated soil - mass of original soil) Density of water) / Volume of original soilThis also works.
What are 5 things that a soil sample will tell you?
Porosity, nitrogen levels, phosphorus level, composition (is it made of clay, sand or silt?), pH level.
As the sample size increases the effect of an extreme value on the sample mean becomes smaller.?
yes
A sample collected by drilling into Earth's surface with a hollow drill and pulling out a column of soil and rocks?
a core sample
What microscope create an image of the surface of sample?
SEM
Why is it necessary to grind the sample?
to increase the surface area
