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Desiccators are sealable enclosures containing desiccants used for preserving moisture-sensitive items. A common use for desiccators is to protect chemicals which are hygroscopic or which react with water from humidity. The contents of desiccators are exposed to atmospheric moisture whenever the desiccators are opened. It also requires some time to achieve a low humidity. Hence they are not appropriate for storing chemicals which react quickly or violently with atmospheric moisture such as the alkali metals. Aglovebox or Schlenk-type apparatus may be more suitable for these purposes. Desiccators are sometimes used to remove traces of water from an almost-dry sample. Where a desiccator alone is unsatisfactory, the sample may be dried at elevated temperature using Abderhalden's drying pistol. in laboratory use, the most common desiccators are circular, and made of heavy glass. 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. A stopcock may be included to permit the desiccator to be evacuated. Such models are usually known as vacuum desiccators. When a vacuum is to be applied, it is a common practice to criss-cross the vacuum desiccator with tape, or to place it behind a screen to minimize damage or injury caused by an implosion. To maintain a good seal, vacuum grease is usually applied to the flanges.

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What science lab instrument is use to keep 100 grams of compound from absorbing atmospheric moisture?

A desiccator is commonly used in science labs to prevent compounds from absorbing moisture from the atmosphere. It is a sealed container filled with a desiccant, such as silica gel or calcium chloride, which absorbs moisture and maintains a dry environment for the compound.


What color scheme uses a color next to one another on the color wheel?

Analogous color scheme uses colors that are adjacent to each other on the color wheel. This scheme creates a harmonious and cohesive look, as the colors blend well together.


What is the name of the color scheme?

The name of the color scheme is called "analogous." This color scheme uses colors that are next to each other on the color wheel, creating a harmonious and cohesive look.


How can you remove water from ethyl acetate by using inorganic salt?

Depending on the Quantity of ethyl acetate, use a DESSICATOR. In the bottom of the dessicator place a crucible of phosphorus pentoxide put in the perforated separating try. In another crucible put in the 'wet' ethyl acetate', on top of the separating try. Using silicon grease, grease the edges of the dessicator bowl and the dessictor lid. Place the lid on the bowl so that it snugly fits. The dessicotor lid should have an evacuation value, to which attached a gas tight, but flexible hose, and the other end to the evacuation pump. Turmn the pump on and leave for say 24 hours. , until the phosphorus pentoxide goes black. This should dry out the ethyl acetate, suitabloe for IR or nmr analysis. Another way, is to put the sample in a 'Muffle Furnace' at about 95 oC. However, this might thermally decompose the ethyl acetate. NB To dispose of the phosphorus pentoxide safely, slowly place spatula amounts in flowing cold water. NNB Whilst phosphorus pentoxide is NOT a salt, it will absorb water. A salt to try is anhydrous calcium chloride.