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Vadim26 [7]
3 years ago
15

22. A piece of wood board contains approximately 6.76 X 1023 molecules of wood, C2H4920, how

Chemistry
1 answer:
Licemer1 [7]3 years ago
5 0

Answer:

<h2>1.23 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{6.76 \times  {10}^{23} }{6.02 \times  {10}^{23} }  =  \frac{6.76}{6.02}  \\  = 1.22923...

We have the final answer as

<h3>1.23 moles</h3>

Hope this helps you

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Explanation:

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6 0
2 years ago
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 <span>The chemical formula of Helium is He. 

Question 1 : 

Given n = 1.11 x 10^-6 

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Question 2 : 

Given p = 4.29x10^21 

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7 0
3 years ago
Iron is a mineral. A nail made out of iron <br> a mineral.<br><br> Answers:<br> Is also<br> Is not
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<h3><u>What is a Galvanic cell ?</u></h3>

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<h3><u>Oxidation:</u></h3>

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7 0
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