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LiRa [457]
3 years ago
12

Use the accepted values for the molar masses of zinc and gold to determine the mass of gold needed to have the same number of at

oms as 10 g of zinc.
Chemistry
1 answer:
Monica [59]3 years ago
5 0

Answer:

30 g of Au have the same number of atoms as 10 g of Zn

Explanation:

Molar mass Au: 196.97 g/m

Molar mass Zn: 65.41 g/m

10 g of Zn are (mass / molar mass) = 0.153 moles

(10 g / 65.41 g/m)

And now let's count the atoms in this amount of Zn ( mol . NA)

0.153 m . 6.02×10²³ = 9.20×10²² atoms of Zn

In which mass of Au, will we have, these quantity of atoms.

So 9.20×10²² atoms are contained in 0.153 moles.

Then, let's convert the moles in mass (mol . molar mass) to get the answer.

0.153 m . 196.97 g/m = 30.1 g

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