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enot [183]
3 years ago
9

How many moles is 1.81 x 10^24 atoms of carbon?

Chemistry
1 answer:
Volgvan3 years ago
4 0
Well a number you have to know is 6.02 x 10^23. That is how many atoms there are in a mole.

So if you have 1.81 x 10^24 atoms,
you divide that by 6.02 x 10^24 moles to get 3 moles

Using factor/label method:
1.81 x 10^24 atoms * 1 mol
                                   ------------------------   = 3 moles
                                   6.23 x 10^23 atoms
(As you can see, the unit "atoms" cancels out from the top and bottom.)

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What is the mass of sodium (Na) in 50 grams of table salt (NaCl)? Show your work.
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Answer:

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Explanation:

Data Given:

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calculate the mole percent composition of sodium (Na) in sodium Chloride.

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So,

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