Charged Aluminum Spheres

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[SOLVED] Charged Aluminum Spheres

Homework Statement


Two small aluminum spheres, each of mass 0.0250 kilograms, are separated by 80.0 centimeters.

How many electrons does each sphere contain? (The atomic mass of aluminum is 26.982 grams per mole, and its atomic number is 13.)

Homework Equations


Conversions from a chemistry course so long ago...

The Attempt at a Solution


.0250 kg * (1000g/1kg) = 25.0 g * (1 mole/26.982g) = .927 mole * (13 e- / mol) = 12 e-
 

Answers and Replies

  • #2
learningphysics
Homework Helper
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13 electrons/atom... not 13 electrons/mole.
 
  • #3
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Nevermind, figured it out. ;)
 
Last edited:

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