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HOW TO USE THE EVAPORATING DISH?
nknbvk
Where is filtration should be use?
Filtration can be used when you want to filter solid or unwanted particles out of a liquid such as water.
How do you use a hydrometer?
it is liquid
Can you use liquid cement for acrylic to acrylic?
You can use acrylic liquid cement for acrylic to acrylic bonding, but the cement has to be designed specifically for these materials. Standard liquid cement will not hold.
What is the use of evaporating plate?
An evaporating dish is a piece of laboratory-glasswareused for the evaporationof solids and supernatant fluidsevaporating-dish, and sometimes to their melting-point. Evaporating dishes are used to evaporate excess solvents, most commonly water - to produce a concentrated solution or a solid precipitate of the dissolved substance.Most are of porcelainor borosilicate-glass. Shallow glass evaporating dishes are commonly termed "watch glasses", from their original use as the front window of a pocket-watch-2.evaporating-dishSome used for high-temperature work are of refractory-metals, usually of platinum, owing to its non-reactive behaviour and low risk of contamination.The capacity of evaporators is usually small - in the range 3-10 ml-abbreviation. Larger dishes, up to 100 ml, are different in shape, and are more hemispherical.The evaporator is used most often in quantitative-analysis.In the determination of siliconcontent in an organic sample, a small and accurately-measured quantity of a substance is added to the large amount of sulfuric-acid, then heated in an evaporating dish. The dish is heated with a bunsen-burner, until only stable precipitate remains, which contains the silica content. The dish is then closed and heated at high temperature until completely clean, fused silica is produced. Comparison of the initial weight of the substance and that of the fused silica allows to the content of silicon in the sample to be determined.A generic evaporatorThe shape of the evaporating dish encourages evaporation in two ways:The shell is relatively flat. A relatively large liquid surface promotes evaporation.If heated in a flask or beaker, a part of the evaporated liquid condenses on the vessel walls and flows back into the solution. This does not happen in a dish.When heating liquid in an evaporating dish, the low walls encourage splashes and so stirring or swirling of evaporating liquids is considered bad practice, owing to the risk of spillage.Evaporation in a laboratory, especially in production quantities rather than merely for analysis, is now mostly performed in a rotary-evaporator. This is preferred because it works much faster and may be used under vacuum, avoiding unwanted reactions with the atmosphere and allowing control of noxious fumes. Evaporation under vacuum also reduces the severity of bumping-chemistryand violent ebullition.-Jobelle Flores Pelagio
How do you use evaporating-dish?
The name is clear: it is used to evaporate a liquid to obtain the solid residue.
Why should you not use heat on a container that may of had an inflammable material in it?
because it might melt (the container)
Are flammable and inflammable antonyms?
No. they are synonyms, meaning about the same thing.Sometimes the word inflammable is used to mean "can become inflamed", which is a slightly different use.
Is direct heating using Bunsen burner flame advisble when evaporating the soduim cholride solution?
As long as the solution is a water-based solution, it should be fine. You should never ever use a Bunsen burner to heat a flammable liquid such as alcohol, ether, acetone, etc.
HOW TO USE THE EVAPORATING DISH?
nknbvk
Why spirit is not used in thermometers?
Melting (freezing) point is −7.2 °C, boilingpoint is 58.8 °C; this temperatures are too close to each other. Besides Bromine is a toxic, easily evaporating liquid when spilled) Compare Mercury: Melting (freezing) point is −38.8 °C, boilingpoint is 356.7 °C and not easily evaporating liquid. (The liquid itself is very toxic, vaporous Hg is very toxic)
Why use an evaporating dish instead of a beaker for sublimation?
Evaporating dishes are used to boil solutions. Crucibles are used to heat solids very strongly.
If an engineers greatest concern is specific impulse which type of fuel should she use?
Liquid fuel-Apex
What should you use to apply lubricant to a gun?
You can use the spray type or liquid type. For the liquid type, you can use a q-tip, small needle, clean patch, clean rag, etc..
How can you separate the calcium chloride from the water?
Use a zink sulphate test
When testing a gas leak you should not use?
Most plumbers use a soapy liquid to see if bubbles form.
Cleaning drains leading to a septic tank system?
Can you use liquid plumber with a septic tank? If not what should you use?
