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Please help explain how to solve this. The correct answer is \"A\" Timmy brushes

ID: 1509388 • Letter: P

Question

Please help explain how to solve this. The correct answer is "A"

Timmy brushes his dog, Lassie, and Lassie acquires a net charge of +65 nC as a result. Which statement below correctly indicates what happened? (A)4.06e+011 electrons were transferred from Lassie to the brush. (B)8.13e+011 electrons were transferred from Lassie to the brush. (C) 4.06e+011 protons were transferred from the brush to Lassie. (D) 8.13e+011 protons were transferred from the brush to Lassie. (E) 8.13e+01 i electrons on Lassie were destroyed.

Explanation / Answer

First, we can find the number of charges.
Total charge, Q = ne
n is the number of electrons and e is the charge of electron.
e = 1.6 x 10-19 C

65 x 10-9 = n x 1.6 x 10-19
n = 4.06 x 1011

Only electrons will transfer since the outermost electrons in an atom are loosely bonded to the nucleus. Transferring a proton need more energy.

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