How many moles of magnesium are added to a test tube if Micah and his lab partner could count the number of atoms in the piece of magnesium ribbon to be 1.50 X 1023?

Question

Chemistry

Ruth Lawson

7 June, 10:01

How many moles of magnesium are added to a test tube if Micah and his lab partner could count the number of atoms in the piece of magnesium ribbon to be 1.50 X 1023?

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Answers (1)

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Mariela Anderson · Answer 1

A very important conversion constant to know and remember here is the Avogadro's number. It states that 1 mole = 6.022 x 10^23 atoms.

With that in mind, you can now easily solve for the moles of magnesium using dimensional analysis.

1.50 x 10^23 atoms x (1 mole/6.022x10^23 atoms) = 0.249 moles of magnesium