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TEA [102]
2 years ago
13

1a. A researcher accidentally spilled some sand into his beaker containing crystalline compound X. Knowing what he did about mel

ting points, he was not worried about obtaining the melting point of compound X with a few grains of sand present. Why
Chemistry
1 answer:
Sunny_sXe [5.5K]2 years ago
7 0

Answer:

See explanation

Explanation:

Many organic compounds have low melting points. This is due to the fact that many of these compounds are non polar.

However, compound X is slightly polar but still has a melting point which is far less than that of sand composed of a high melting point inorganic material.

Since sand has a much higher melting point compared to compound X, the researcher need not be worried that sand was spilled into his beaker.

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What makes science reliable
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Answer:

Science is really reliable because there is research and math and brains. Actual science are results from experiments, so it's mainly always correct.

Explanation:

5 0
2 years ago
The elements chlorine and iodine have similar chemical properties<br> because they
Anton [14]

Answer:

They are both halogens and have the same number of electrons on their outer shell.

Any element with 7 electrons in the outermost shell will have similar properties. Thus other elements in the same column of the periodic table as chlorine will have similar properties.

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2 years ago
Some changes in matter may results to 1. _ or 2._ effects in the environment. We have to do our share in maintaining 3. environm
fredd [130]

Answer:

C

Explanation:

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6 0
2 years ago
How does a mixture of benzoic acid and benzaldehyde can be isolated separately by extractions? ​
Vilka [71]

Answer:

Dissolve benxioc acid and benzaldehyde in organic solvent. The two compounds are not miscible.with water. Put the two in separating funnel. Then use aqueous sodium bicarbonate to extract. Benzioc acid will be in aqueous layer as benzioate ion. Benzaldehyde remain insoluble and can be isolated.

Explanation:

Extractions are techniques use to separate desired compounds when mixed together. The mixture is brought in contact with solvent in which the sites substance is soluble and other is insoluble. Extractions use imissicible stages to separate substance from another.

6 0
3 years ago
Antacids are used to relieve heartburn and sour stomach. Products like these commonly contain substances such as Mg(OH)2, Al(OH)
Leokris [45]

Answer:

They all react with acids.  

Explanation:

Thus, they decrease the concentration of stomach acid and provide heartburn relief.

The equations for the reactions are:

  1. Mg(OH)₂ + 2HCl ⟶ MgCl₂ + 2H₂O
  2. Al(OH)₃ + 3HCl ⟶ AlCl₃ + 3H₂O
  3. CaCO₃ +2HCl ⟶ CaCl₂ + H₂O + CO₂

6 0
3 years ago
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