(35) Calculate the total charge of all the electrons in a copper plate of mass 3.0g, atomic number z = 29 and atomic mass 63.5g/mol. (Avogadro's no.- 6.02x1023
atoms, e = 1.6x10-1°C)

Given :

A copper plate of mass 3.0g.

Atomic number, z = 29.

Atomic mass, M.M = 63.5 g/mol.

Avogadro's number, .

Charge on electron, .

To Find :

The total charge of all the electrons.

Solution :

Moles of copper,

Number of atoms in 0.047 moles of copper :

Since, there are 29 electrons on each atoms.

So, total charge is :

Hence, this is the required solution.

your answer is c! hope this : )