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If you have a sample of 3.5 × 1022 atoms of tin (Sn), how many moles of tin do you have?

The correct answer according to the text is 0.058 mol Sn but no matter how I work it, I get 5.8 X 10^-2 mol Sn. I am using a scientific calculator. How did they get that answer?

Sagot :

Eduard22sly

The number of mole of tin (Sn) that you have is 0.058 mole

Avogadro's hypothesis

6.02×10²³ atoms = 1 mole of tin (Sn)

With the above information, we can obtain the number of mole ot tin. Details below

How to determine the mole of tin that contains 3.5×10²² atoms

We can obtain the number of mole of tin as follow:

6.02×10²³ atoms = 1 mole of tin (Sn)

Therefore,

3.5×10²² atoms = (3.5×10²² atoms × 1 mole) / 6.02×10²³ atoms

3.5×10²² atoms = 0.058 mole of tin (Sn)

Thus, the number of mole of tin (Sn) you have is 0.058 mole

Learn more about mole and avogadro's number:

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