How long a current of 2A is to be applied through a solution of `AgNO_3` to coat a material of metal surface 100 `cm^2` area and 0.005 mm thickness ? (density of `Ag=10.5 gm//cm^3`, & atomic mass = 108)

Find the quantity of electricity needed to plate a metal of 100 cm^2 area and 10^-2cm thickness using CuSO_4 solution. (density of copper = 9.94 gm//cm^3 and atomic mass = 63.5)

What mass of silver will be deposited at the Cathode when a solution of AgNO_3 is electrolysed by passing a current of 2 amperesfor 30 minites.(Eq.mass of Ag=108)

A current of 4 amper is passed through AgNO_3 solution for 30 min, which deposits 7 gm of silver. Find the current efficiency. (Ag = 108)

A 0.005 cm thick coating of copper is deposited on a plate of 0.5m^2 total area. Calculate the number of copper atoms deposited on the plate (density of copper = 7.2 g cm^(-3) , atomic mass = 63.5 )

A current of 0.5 amperes was passed through a solution of silver nitrate for six min. Find the mass of silver deposited. (Atomic mass of Ag = 108 )

A current of 2 ampere was passed through solution of CuSO_4 and AgNO_3 in series. 0.635 g of copper was deposited .Then the weight of silver deposited will be:

Calculate the number of moles in an iron bar dimension 10 cm xx 4 cm xx 2..5 cm density of iron being 7.85 gm/ cm^3

Silver is electrolytically deposited on a metallic vessel of total surface area 900 c m^(2) by passing a current of 0.5A for 2h. Calculate the thickness of silver deposited . Given, density of silver =10.5 g c m^(-1) . Atomic mass of silver = 108u, F = 96500 C "mol"^(-1)

A balloon is pumped at the rate of 2 cm^3// minute. Write the rate of increase of the surface area, when the radius is 0.5 cm.