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Rashid [163]
3 years ago
7

Meep help me I have 23 minutes left

Chemistry
2 answers:
Aloiza [94]3 years ago
3 0

Answer:

I believe the answer is C

ankoles [38]3 years ago
3 0
I believe the anwser is C because it’s the only one that makes sense
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An exciton is: A charged particle made of electrons A charged particle made of holes A neutral particle made of an electron and
Alex

Answer:

A neutral particle made of an electron and hole

Explanation:

Exciton

It is the combination of an electron and a hole ( hole refers to the vacancy of an electron ) . And , as both the electron and the hole have the same charge but the polarity is opposite , the combination will lead to a neutral compound , i.e. ,  Exciton have no charge and so neutral .

It is free to move in the nonmetallic crystal and since it charge less , it is difficult to detect it directly .

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3 years ago
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Explanation:

Chlorine is a nonmetal because it does not have the characteristics of a metal. It cannot conduct electricity, it is not flexible, and it is not hard

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3 years ago
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Andrej [43]
1.<span>B) <span>the subscript
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3 years ago
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Four acids are analyzed and their Ka values are determined. Which of the following values represents the strongest acid?
labwork [276]
Hi, thank you for posting your question here at Brainly. 

The acid dissociation constant, Ka, is an equilibrium constant that measure the strength of an acid. It is a ratio of the concentration of the products (salt and water) and the reactants (acid). The higher the Ka, the more tendency it is to favor the product side, which means more tendency to donate H+ ions. This is exactly the definition of a strong acid (high H+ ionized).

Thus, the answer is letter D.
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3 years ago
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marin [14]

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Yes

Explanation:

the gravity of an object depends on its mass. that's why the sun has its gravitational pull.

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