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Grade 12Electrostatics

Calculate the total positive and negative charge on a 3.11g copper penny.Given atomic charge is 29, atomic mass is 63.5

Profile image of Akanksha Singh
9 Years agoGrade 12
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2 Answers

Profile image of Vikas TU
9 Years ago
First we need to calculate the moles and then after the number of atoms to proceed further,
Moles of copper => 3.11/63.5 = 0.0489
Number of atoms => 0.0489 * Na => 0.0489 * 6.023 * 10^23 => 0.294*10^23
Number of protons = >  0.294*10^23*29 = > 8.55*10^23
Number of electrons = > Number of protons => 8.55*10^23
Total number of charges = > 8.55*10^23 + 8.55*10^23 => 17.11 x 10^23
Profile image of Akanksha Singh
9 Years ago
Dear Vikas TU,
Can you explain me the answer in brief. Please make it more simplier for me to understand.

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