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tekilochka [14]
3 years ago
7

Which physical method can be used for obtaining a sample of salt from a small beaker of salt water? boiling freezing filtration

sorting
Chemistry
2 answers:
Dvinal [7]3 years ago
7 0

Correct answer choice is :


A) Boiling


Explanation:


Boiling is the fast evaporation of a water, which happens when a liquid is boiled to its boiling point, the temperature at which the condensation pressure of the liquid is equal to the force used on the liquid by the nearby environment. Boil or steam the water and the salt will be left after as a solid. If you want to get the water, you can use distillation. This works because salt has a much greater boiling point than water.

sergij07 [2.7K]3 years ago
3 0
I think it's boiling :)
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Vitek1552 [10]
Moles Chlorine to grams = 35.453 grams.
moles Chlorine to grams = 70.906 grams.
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moles Chlorine to grams = 141.812 grams.
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4 0
3 years ago
A student is titrating 50 mL of 0.32 M NH3 with 0.5 M HCl. How much hydrochloric acid must be added to react completely with the
Sveta_85 [38]

Answer:

The volume of HCl to be added to completely react with the ammonia is 0.032 L or 32mL

Explanation:

Using the formula

Ca Va = Cb Vb

Cb = 0.32 M

Vb = 50 mL = 50/1000 = 0.050L

Ca = 0.5 M

Va =?

Substituting for Va in the equation, we obtain:

Va = Cb Vb / Ca

Va = 0.32 * 0.05 / 0.5

Va = 0.016 / 0.5

Va = 0.032 L

The volume of HCl to be added to completely react with the ammonia is 0.032 L or 32mL

6 0
3 years ago
The purpose of a machine is to decrease the work needed. TRUE/FALSE
aniked [119]

Answer:

False.

Explanation:

A machine does not decrease the work needed. It simply makes the work easier or changes how the work is done.

8 0
3 years ago
Read 2 more answers
Valence electrons will either ______________ or ______________ to form molecules.
Aneli [31]

Answer:

ionic or covalent

Explanation:

The outermost electrons -- the valence electrons -- are able to interact with other atoms, and, depending on how those electrons interact with other the atoms, either an ionic or covalent bond is formed, and the atoms fuse together to form a molecule.

4 0
3 years ago
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How many grams of mercury would be contained in 15 compact fluorescent light bulbs?
zhenek [66]

Answer:

Grams of mercury= 0.06 g of Hg

Note: The question is incomplete. The complete question is as follows:

A compact fluorescent light bulb contains 4 mg of mercury. How many grams of mercury would be contained in 15 compact fluorescent light bulbs?

Explanation:

Since one fluorescent light bulb contains 4 mg of mercury,

15 such bulbs will contain 15 * 4 mg of mercury = 60 mg

1 mg = 0.001 g

Therefore, 60 mg = 0.001 g * 60 = 0.06 g of mercury.

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5 0
3 years ago
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