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3 years ago

The best method for seperating a salt from water is

Chemistry

2 answers:

igor_vitrenko [27]3 years ago

7 0

Answer:

The answer is 1-boiling

Explanation:

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abruzzese [7]3 years ago

6 0

Answer:1 Boiling

Explanation:

Salt (Solute) + water (solvent) = Solution.

Salt dissolves in water, therefore, the only way to recover the salt is by boiling (evaporation) the solution.

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What shape would a molecule of carbon tetrachloride have?

Elden [556K]

Answer:

Tetrahedral

Explanation:

For the repulsion of the free electron pair theory, the shape of a molecule will be to repel the bonds and the free electrons on the central atom. In a molecule of carbon tetrachloride, the central atom (C) has no free electrons, so, the shape that repels better the charge is tetrahedral, as shown below.

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3 years ago

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Why does solid change to liquid when heat is added

Sophie [7]

Because that solid is frozen liquid, so when it gets heated up, it will melt. Like Ice.

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3 years ago

What is the easiest way to explain molecular compounds and covalent bonds also adding information about valance electrons?

wlad13 [49]

Answer:

Molecular compounds consist of two or more nonmetals. The nonmetals that make up a molecular compound are held together by covalent/molecular bonds. Covalent bonds is known as the "sharing" of valence electrons between two or more chemical species. Valence electrons are shared so that the atoms of the compound can become stable, much like how ionic bonds transfer valence electrons between atoms to achieve stability.

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3 years ago

Gaseous ammonia chemically reacts with oxygen O2 gas to produce nitrogen monoxide gas and water vapor. Calculate the moles of ox

WINSTONCH [101]

Answer : The number of moles of oxygen needed are, 1.5 moles.

Explanation :

The balanced chemical reaction will be:

$4NH_3+5O_2\rightarrow 4NO+6H_2O$

Now we have to calculate the moles of oxygen.

From the balanced chemical reaction we conclude that,

As, 6 moles of water vapor produces from 5 moles of oxygen

So, 1.80 moles of water vapor produces from $\frac{5}{6}\times 1.80=1.5$ moles of oxygen

Therefore, the number of moles of oxygen needed are, 1.5 moles.

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3 years ago

Write the correct chemical formula for potassium and sulfur

Shalnov [3]

Phosphorus + Sulfur ------> Phosphorus sulfide

2P + 3S ------> P2S3

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3 years ago