Respostas

2014-04-02T02:02:01-03:00
Carga elementar sendo= 1,6×10 ^{-19} c

Q=n×e 
-15,5=n×1,6×10 ^{-19}  
n=15,5 ×1,6× 10^{-19}
n=24,8× 10^{-19}

resposta final: 24,8× 10^{-19}
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