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Alex777 [14]
3 years ago
8

enny places a strip of pH paper into a solution. When she removes the pH paper, it has turned yellow-green. What should Jenny do

next to determine the pH of her solution?
Chemistry
1 answer:
Svetllana [295]3 years ago
8 0
Compare it to the chart showing how base or acidic a substance is
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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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A sample of air is composed of nitrogen, oxygen, and argon gases. if the partial pressure of nitrogen is 587 mm hg, oxygen is 15
oksian1 [2.3K]
The total  pressure  is calculated as below

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Explanation:

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