How do you find the number of electrons given a mass fo the object?

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To find the number of electrons in a 13.0 g silver pin, first calculate the number of moles of silver using its molar mass of 107.87 g/mole, resulting in approximately 0.120 moles. Then, multiply the number of moles by Avogadro's number (6.022E23 atoms/mole) to find the total number of silver atoms. Since each silver atom contains 47 electrons, multiply the total number of atoms by 47 to find the total number of electrons. The final calculation yields approximately 3.41E24 electrons in the silver pin.
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Homework Statement



(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 13.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mole.


Homework Equations


N/A


The Attempt at a Solution



I thought to try using the molar mass given and dividing it by mass of the pin.
107.87g/mole / 13 g = 8.298 1/mole

After this point I didn't know what to do next
 
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How many atoms are in a mole?
 
I think you were trying to find the number of moles of silver in the pin, but you would up with a unit of 1/moles in your calculation.

What does this tell you about how to do the calculation correctly?
 
Thanks a lot! I used avogadro's number.

(13g)/(107.87g/mole)*(6.022E23atoms/mole)*(47electrons) = 3.41E24 electrons in the silver pin
 
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