Question

Nobody can solve this class 8 question.If you have the courage then solve this.​

Answer 1

Answer:

13.6 x10∧-6

Explanation:

No of coulombs = q = it = 6.023 x 2 coulombs  = 12.046 coulombs

1 mole of Cu = 63.55 g

20 g of Cu = 20/63.55 = 0.315 moles , Cu atomic number = 29

all electrons = T = 20x29x6.02x10∧23e/63.55 = 5.5x10∧24e

but for free electrons the number of electrons is

N = 12.046 ÷ 1.602×10∧-19 = 7.5x10∧19e

,

Ratio = N/T = 7.5x10∧19e ÷ 5.5x10∧24e = 13.6 x10∧-6