How Do You Calculate the Net Charge of a Substance?

[gotpink74]

Homework Statement

Calculate the net charge on a substance consisting of a combination of 5.4 1013 protons and 4.2 1013 electrons.

Homework Equations

I subtracted the two but i still had the wrong answer

The Attempt at a Solution

9.6E13
1.2E13

 

[Redbelly98]

They probably want the charge given in Coulombs. You never really said what your answer is; is it 9.6e13 or 1.2e13?

If you don't already know, you should look up what the charge is for just one proton -- or just one electron. The value should be given in your textbook, either in the chapter you are studying, or perhaps on the inside front or back cover.