Question:
Calculate the total positive or negative charge on 3.11 g copper penny. Given Avogadro number = 6.02 × 10 to the power 23 and atomic number of copper = 29 and atomic mass of copper = 63.5
Answer:
The number of atoms in given copper -
(6.023×1023 ×3.11)/63.5
Given, atomic number of copper =29
So, Each atom contains 29 protons and 29 electrons
So, the positive or negative charge on it=
±(6.023×1023 ×3.11)/63.5 ×29 ×1.6×10-19
= ± 1.37×105 C
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