Question

(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 8.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol.

(b) Imagine adding electrons to the pin until the negative charge has the very large value 2.00 mC. How many electrons are added for every 109 electrons already present?

thanks

Answer 1

How many moles of silver do you have? 8/147.87

for each mole of silver atoms, you have avagnumber*47 electrons.

number electrons: charge/chargeof one electgron

ratio=number added/109