0.222g of a divalents metal is deposited when a current of 0.45a is passed through a solution of it salts for 25mins calculate the relative atomic mass of the metal (1faraday =96500c)

Answer 1

an ampere is a coulomb per second

0.45 coul/s * 60 s/min * 25 min = ? coulombs

6.2E18 electrons per coulomb
... divide by Avogadro's number to find moles of electrons

it takes two electrons to deposit one atom of the metal (DIvalent)

find the moles of metal

divide sample mass by moles of metal to find atomic mass