Charge: A piece of plastic has a net charge of +2.00 ?C. How many more protons than electrons does this piece of plastic have? (e = 1.60 × 10-19 C)
A. 1.25 × 1013
B. 1.25 × 1019
C. 2.50 × 1013
D. 2.50 × 1019
E. 3.01 × 1023
Answer: A
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