Passage of a current for 548 seconds through a siver coulometer results in the deposition of 0.746g of silver.What is the current (in A)?

The passage of current through a solution of certain electroylte results in the formation of hydrogen at anode the soltuion is

The passage of current through a solution of certain electrolyte results in the evolution of H_2 (g) at cathode and Cl_2 (g) at anode. The electrolytic solution is :

0.1 ampere current is passed for 10 seconds through Cu and Ag. The metal that will deposit more is

A steady current is passed for 25minutes through a silver voltameter and ammeter in series and 0.059g of silver of deposited. The ammeter reads 0.3A. Find the errror, if any, in the ammeter reading, given that the E.C.E. of silver =11.18xx10^(-7) kg C^(-1) .