(a)[1]
State what the student does to the cathode once it has been removed from the solution and before it is placed on the balance for measuring its mass.
(b)[3]
Plot the table results and continue the lines until they meet.
(c(i))[1]
Use your graph to find the mass of zinc deposited after $18\,\text{minutes}$.
(c(ii))[1]
Use your graph to find the minimum time needed for all the zinc to be deposited.