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kirza4 [7]
3 years ago
7

What is an atom? ? ? ?

Chemistry
2 answers:
navik [9.2K]3 years ago
6 0
Basic unit of a chemical element or atoms as a source of nuclear energy
straight out of dictionary
zzz [600]3 years ago
3 0
Atom is the simplest constituent of any substance.
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3 years ago
How many moles are in 5.6x1025 molecules of calcium oxide?
Vlad1618 [11]

Answer:

<h2>93.02 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{5.6 \times  {10}^{25} }{6.02  \times  {10}^{23} }  \\  = 93.023...

We have the final answer as

<h3>93.02 moles</h3>

Hope this helps you

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3 years ago
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2 years ago
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