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Which physical method can be used for obtaining a sample of salt from a small beaker of salt water?
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What are the properties of a beaker?
There are several properties that could help a person identify a beaker full of mysterious clear liquid. For example, smelling the liquid might help. Also, seeing what it reacts with, and where it falls on the pH scale would be helpful.
What is external standard method for chromatographic technique and how to perform it?
In external standard method we run a standard for the substance we are looking for in our sample and than run our sample in the same conditions. we will obtain peaks for the sample and standards and can correlate the sample with the standards and can determine the concentration of the same in our sample. for more details contact vani2007
Is it safe to heat a flammable liquid sample in a beaker over a bunsen burner?
The flammable liquid will catch fire. That can be dangerous. Answer "no".
What is Sample of physical change?
For example melting of lead.
How do you test core pH of fabric?
Core pH of fabric: AATCC test method 81-2006: Take 10 gm sample, cut it in small pieces. Take 250 ml distilled water in a beaker and boil it for 10min. Then add the samples in the beaker, cover it and boil for another 10 min. Cool down to room temperature and then determine the pH of extracts using pH meter. updated by Bapan Adak M.Tech, IIT Delhi
A simple method of obtaining an actual sample of seafloor sediment is with a?
grab sampler
Why is obtaining a representative sample important?
Many statistical statements for a population which are based on a sample are not valid if the sample is not representative.
How do you get the specific gravity of a mineral?
Fill a beaker with water, and weigh it. Weigh a sample of the mineral. That's the mass of the mineral. Put the sample in the beaker and weigh that. The weight of the water-filled beaker plus the weight of the mineral sample will be greater than the weight of the beaker with mineral sample and water. The difference is the weight of the displaced water, in grams. The volume of the mineral sample, in cubic centimeters is equal to the weight of the displaced water, in grams. Calculate the specific gravity of the mineral by dividing the weight of the mineral sample by the volume of the mineral sample. Example: your beaker weighs 40 grams. Filled with water, it's 1040 grams. The sample of mineral weighs 160 grams. The beaker with the sample of mineral and water weighs 1179.7 grams. The mineral, and the beaker with water would have a combined weight of 1200 grams, but the beaker with mineral and water weighs 20.3 grams less than that, so the mineral sample is displacing 20.3 cubic centimeters of water. Given a mass of 160 grams and a volume of 2.03 CC, the specific gravity would be found by dividing 160 by 20.3. It's 7.85. (Which happens to be the specific gravity of some iron.)
What is the term that describes obtaining a tissue sample?
biopsy
How do you calculate non volatile matter percentage in a solution?
Non volatile matter = [(W2-W1)/V] x 100 where W2 :Weight of beaker [Before sample addition & evoporation] W1 :Weight of beaker [after sample evoporation] V : Volume of sample taken
Why chromatography is a physical process?
Chromatography is physical techniques for separation. The method involves the dissolution of the materials in a mobile phase, then forced through a stationary phase in which the components of the sample separate.
What are the properties of a beaker?
There are several properties that could help a person identify a beaker full of mysterious clear liquid. For example, smelling the liquid might help. Also, seeing what it reacts with, and where it falls on the pH scale would be helpful.
The water in the beaker gets its heat energy from the?
Flame , metal sample
What color do you get if you mix the beaker with lab gel on cryptids island?
During the DNA testing on Cryptids Island, you will add the sample (fur or egg shells) to a beaker, then before add an enzyme (the red #3). Before putting this mixture into the tray, you add Lab Gel, which is yellow in color, to the tray. When you add the orange sample beaker, the tray also turns orange.
What is the preferred method to select a sample population?
simple random sampling method
Characteristics of sampling method?
characteristics of sample
Sample of research proposal about physical education?
Eva I need a sample of research proposal for physical education..plz help..!
