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gtnhenbr [62]
3 years ago
6

Out line the successive steps in the crystallization of an organic solid from a solvent and state the purpose of each operation.

Chemistry
1 answer:
Neporo4naja [7]3 years ago
8 0

Answer:

See explanation

Explanation:

Crystallization is a separation technique used to obtain pure crystals of a substance from an impure mixture of solid substances.

The impure solid is dissolved in an appropriate hot solvent. This hot solvent is able to effectively dissolve the solid. However, as the solution is allowed to cool, the pure solid separates out of the solution as crystals.

The solid is now filtered to obtain the pure solid. The solid is also washed and dried to remove any solvent contaminant.

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Atoms of hydrogen can become helium atoms during a chemical reaction.<br> True<br> False
marishachu [46]

Answer:

false

in chemical reaction element doesnot change into another

Explanation:

3 0
4 years ago
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WILL MARK BRAINLIEST
fenix001 [56]

Answer:

If the planet has a lower orbital radius it means the planets proximity to the sun is farther away. The climate of the planet will be colder than a planet that would have a closer proximity to the sun.

4 0
4 years ago
Which of the following molecules can be used in catabolic reactions to generate the carbon backbones required for gluconeogenesi
sleet_krkn [62]

Answer:

The correct option is A

Explanation:

Some amino acids, called glucogenic amino acids, when catabolized convert there carbon backbones to tricarboxylic acid (TCA) cycle intermediates. These intermediates can be subsequently metabolized into carbon dioxide and water with the release of ATP or the formation of glucose (known as gluconeogenesis.

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3 0
3 years ago
As a real gas deviates from ideal gas behavior, the particles _____
Alik [6]

Answer:

Have some attraction towards each other

Explanation:

Gases deviate from the ideal gas behavior because their molecules have forces of attraction between them. At high pressure, the molecules of gases are very close to each other so the molecular interactions start operating and these molecules do not strike the walls of the container with full impact.

Hope this helps :-)

Have a great rest of your day or night!

Enjoy your studies and assignments

<3 simplysun

ps. I do not own any of these answers so please don't give full credit to me

7 0
3 years ago
A mixture of gases at a total pressure of 95 kPa contains nitrogen, carbon dioxide and oxygen. The partial pressure of carbon di
meriva

Answer:

23 kPA

Explanation:

95kPa = 24kPA (CO2) + 48 kPa (N) + x kPa (O)

24kPA(CO2)+ 48kPA (N) = 72 kPA

95kPA - 72kPA= 23kPA (O)

6 0
3 years ago
Read 2 more answers
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