Answer:
[tex]2.19\cdot 10^{20}[/tex] electrons
Explanation:
I assume you mean:
How many electrons are there in [tex]3.5\cdot 10^{1}C[/tex]?
Solution:
The charge of one electron is (in magnitude)
[tex]e=1.6\cdot 10^{-19}C[/tex]
The charge in this problem is
[tex]Q=3.5\cdot 10^{1} C[/tex]
So, we can find how many electrons are in this charge by simply dividing the total charge by the charge of one electron:
[tex]n=\frac{Q}{e}=\frac{3.5\cdot 10^{1}}{1.6\cdot 10^{-19}}=2.19\cdot 10^{20}[/tex]
