Answer:
-57792 C
Explanation:
Recall that in one mole of a substance there are an Avogadro number of molecules. That is:
[tex]6.02\,\,\,10^{23}[/tex] molecules
therefore, in 1.2 g, there would be ten times less molecules than in the 12.0 g mole, that is: [tex]6.02\,\,\,10^{22}[/tex] 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:
[tex]6\,*\,6.02\,\,\,10^{23}=36.12\,\,\,10^{22} =3.612\,\,\,10^{23}[/tex] electrons.
Now we multiply this number times the charge of an electron [tex](1.6\,\,\,10^{-19}\,C)[/tex], and we obtained the total negative charge of the carbon sample:
Total negative charge is: [tex]5.7792\,\,10^{4}\,C=57792\,\,C[/tex]
therefore the total negative charge is: -57792 C
