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vodka [1.7K]
2 years ago
6

A student shines a flashlight on a mirror.

Chemistry
2 answers:
irga5000 [103]2 years ago
7 0

Answer:

a

Explanation:

mirrors reflect light

weeeeeb [17]2 years ago
6 0

Answer:

a

Explanation:

if you try it you can see it reflex onto whatever is behind the mirror

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Which of the following choices has the compounds correctly arranged in order of increasing solubility in water? (least soluble t
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Answer: Option (d) is the correct answer.

Explanation:

As it is known that like dissolves like. So, water being a polar compound is able to dissolve only polar compounds.

Hence, a compound that is ionic or polar in nature will readily dissolve in water. Whereas non-polar compounds will be insoluble in water.

As CCl_{4} is a non-polar compound. Hence, it is insoluble in water.

On the other hand, CHCl_{3} is a polar compound due to difference in electronegativity of chlorine and carbon atom there will be development of partial charges. Hence, there will be dipole-dipole forces existing between them.

Whereas NaNO_{3} is an ionic compound and it will readily dissociate into ions when dissolved in water. Also, there will be ion-dipole interactions between sodium and nitrate ions.

Hence, NaNO_{3} will readily dissolve in water.

Thus, we can conclude that the compounds correctly arranged in order of increasing solubility in water are CCl_{4} < CHCl_{3} < NaNO_{3}.

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