## What is the total negative charge, in coulombs, of all the electrons in a small 1.20 g sphere of carbon? One mole of C is 12.0g, and each at

Question

What is the total negative charge, in coulombs, of all the electrons in a small 1.20 g sphere of carbon? One mole of C is 12.0g, and each atom contains 6 protons and 6 electrons.

Attempted to calculate the total number of electrons first and then using that to calculate the total negative charge. Came out with 8475.4, but MP says it is wrong.

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Physics
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2021-07-22T07:14:44+00:00
2021-07-22T07:14:44+00:00 1 Answers
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## Answers ( )

Answer:-57792 CExplanation:Recall that in one mole of a substance there are an Avogadro number of molecules. That is:

molecules

therefore, in 1.2 g, there would be ten times less molecules than in the 12.0 g mole, that is: molecules.

Now, each C there are 6 negative charges, then, the number of electrons will be six times the number of C molecules, that is:

electrons.

Now we multiply this number times the charge of an electron , and we obtained the total negative charge of the carbon sample:

Total negative charge is:

therefore the total negative charge is:

-57792 C