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Chemistry, 02.09.2019 17:30 genyjoannerubiera

Excess electrons are placed on a small lead sphere with a mass of 8.30 g so that its net charge is −3.70×10−9 c .
(a) find the number of excess electrons on the sphere.(b) how many excess electrons are there per lead atom? the atomic number of lead is 82, and its atomic mass is 207 g/mol?

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