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BabaBlast [244]
3 years ago
9

What subatomic particle gives off visible light when it drops back down to a lower energy state?

Chemistry
1 answer:
Black_prince [1.1K]3 years ago
4 0
The subatomic particle that gives off visible light is electrons
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Calculate the number of moles of iodine in 7.68×10^25 molecules of I2
Dmitrij [34]

Answer:

<h2>127.57 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{7.68 \times  {10}^{25} }{6.02 \times  {10}^{23} }   \\  = 127.574750...

We have the final answer as

<h3>127.57 moles</h3>

Hope this helps you

4 0
2 years ago
Someone help me please ​
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5 0
2 years ago
Which is the correct Lewis structure of C2H4
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Lewis structure for C2H4

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3 years ago
How do you expect the water level to change when the apparatus is placed in warm water? In cool water?
wlad13 [49]
I am assuming that the apparatus you're referring to would be a container wherein there is water placed inside. To answer your question, I expect the water level to rise when it's placed in warm water and I expect it to fall when placed in cool water. This is because the water molecules get excited when placed in water molecule, thus, moving with more kinetic energy. The opposite goes with cool water. 
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Flauer [41]

Answer:

hope it helps you....

Explanation:

natural and social environment.

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2 years ago
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