Example: A conducting sphere X that has an initial charge of +2.0 × 10(adsbygoogle = window.adsbygoogle || []).push({}); ^{–8}C and an identical conducting sphere Y that has an initial charge of –3.0 × 10^{–8}C are touched together. After they are separated, the charge on sphere X is?

Answer: (–5.0 × 10^{–9}C)

And what I would have done is tried to balance them out by adding them together and dividing by 2, but either way I can't understand how they got an exponent of "-9"

Not a homework problem, I just need to understand what's going on here, and how to come up with solutions to solving this type of problem with charged particles.

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# How does conservation of charge work?

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