Question

Calculate the net charge on a substance consisting of a combination of 5.5 × 10^13
protons and 1.2 × 10^13electrons.

I tried -1.62279x10^20 but seemed don't work for me.

Answer 1

@Mkz , tell me what happens when
1 proton + 1 electron ?

Answer 2

@Mkz , there ??

Answer 3

o

Answer 4

repel

Answer 5

repel ??

Answer 6

yeah..

Answer 7

1 proton + 1 elctron = no charge.
(they don't repel)
So now tell me in your question which is greater, number of proton or number of electron ??

Answer 8

proton..

Answer 9

4.3x10^13 protons

Answer 10

Yes. Now 1.2 × 10^13electrons + 1.2 × 10^13protons neutralize and charge becomes zero.
Therefore
Number of protons-->you told above

Now multiply the number of protons by 1.6 * 10^{-19} to get your answer

Answer 11

multiply?

Answer 12

6.88x10^-6?

Answer 13

yes boss

Answer 14

thx any way the online quest freak out now

Answer 15

why multiply ?
Because
1 proton contains 1.6*10^(-19) charge
therefore
4.3x10^13 protons contain ??

Therefore

4.3x10^13 protons contain 4.3x10^13 * 1.6*10^(-19} charge

Answer 16

yw :)