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Aliun [14]
2 years ago
14

I need help with chemistry!!! 20 points

Chemistry
1 answer:
cluponka [151]2 years ago
5 0

Answer:

See explanation

Explanation:

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What is the mass of a sample of pure gold containing 3.00 x 1024 gold atoms?
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Answer: The mass is 980.6g of Gold.

Explanation:

We begin by looking for the number of moles equivalent to 3.0 x 10^24 gold atoms.

Using the Avogadro's number,

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3.0 x 10^24 atoms would make up: 1 / 6.02 x 10^23 x 3.0 x 10^24 = 4.98moles.

Now that we know the number of moles, we can then look for the mass using the formular:

Moles = mass/ molar mass

4.98 = mass / 196.9 (atomic mass of gold)

Making "mass" the subject of formula : mass = 4.98 x 196.9= 980.6g

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