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Why desiccator is not used to dry acetanilide in crystallization?
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Why should the dried sample be kept in desiccator for cooling?
If a dried sample is warm, it will absorb water from the air while cooling. Placing it in a desiccator puts it in a dry atmosphere where no moisture is available to be absorbed from the air.
What is used to measure dry sand?
what is used to measure dry sand
Which benzene is used in dry cleaning?
Chlorobenzene is used in dry cleaning.
What is the use of a lab desiccator?
During an ash test procedure this could be used to ccol the material after burning off all volital materials. This would prevent the absorption of moisture during the cooling process so an accurate weight of the material can be obtained to generate a valid measure of the volitals that were vaporized in the first step of this procedure.
What is volcanic ash used for and why?
it is used for concrete because it dry into a hard substance and when mixed with the right substances, can dry under water
Why should the dried sample be kept in desiccator for cooling?
If a dried sample is warm, it will absorb water from the air while cooling. Placing it in a desiccator puts it in a dry atmosphere where no moisture is available to be absorbed from the air.
Why can't you used calcium chloride to dry methanol?
Because calcium chloride reacts with alcohols to form alcohols of crystallization you CHEM 2380 LOSER.
What is a desiccant?
The definition of desiccant is a substance that has hygroscopic properties. It is a drying agent, and it will remove moisture from the air. Desiccants are often packaged with moisture-sensitive products to make sure they have a dry atmosphere.
Can you give me a technical description of a desiccator?
Here is a description of the function of a desiccator, this is about as technical as it gets Desiccators are sealable enclosures containing desiccants used for preserving moisture-sensitive items. A common use for desiccators is to protect hygroscopic (Water Attracting) items such as honey, glycerin, ethanol, methanol; from humidity. In laboratory use, the most common desiccators are circular, and made of heavy glass although plastic desiccators such as polycarbonate are available. There is usually a removable platform on which the items to be stored are placed. The desiccant, usually an otherwise-inert solid such as silica gel, fills the space under the platform. By selecting different drying agents for the lower chamber, the humidity in the desiccator can be adjusted from very moist to bone dry. This will enable samples kept inside to be held at the optimum humidity for the application at hand. The high surface area of silica gel absorbs any moisture present within the chamber, thus keeping the items dry. A stopcock (Valve / tap) may be included to permit the desiccator to be evacuated. (Air removed) Such models are usually known as vacuum desiccators. To maintain a good seal, vacuum grease is usually applied to the flanges. Once the air is pumped out, the stopcock on the desiccator can be turned to seal it off from the pump and thereby retain the interior vacuum. When the stored samples are required, the stopcock is rotated to allow entry of air (or an inert atmosphere) thereby making it possible to open the formerly evacuated chamber. This kind of desiccator is almost always used when the samples to be stored must be kept as dry as possible or if the stored samples could be harmed by contact with air. xcen>fr RGoogle
What is used to measure dry sand?
what is used to measure dry sand
When dry bonding is used by bricklayer?
dry bonding is used by a bricklayer when
Which benzene is used in dry cleaning?
Chlorobenzene is used in dry cleaning.
Does sugar evaporates?
Dry sugar doesn't evaporate. However, syrup can crystallize, since the water would evaporate, leaving the sugar.
Is heat or wind used to dry clothes?
Wind is used to dry clothes.
How could you tell when a hydrated crystal is dry?
There are a number of ways you could tell when a hydrated crystal starts to become dry. It will start to lose its shine for example.
What is a dry measuring cups used for?
A dry measuring cup is used to measure dry and solid ingredients.
Is a battery used in a torch wet or dry?
Dry
