What mass of copper is required to replace silver from 4.00g of silver nitrate dissolved in water?

cu + agno3 → cu(no3)2 + ag

The balanced chemical reaction is written as:

Cu +2AgNO3 → Cu(NO3)2 + 2Ag

We are given the amount of silver nitrate to be used for the reaction. This value will be the starting point of our calculations. It is as follows:

4.00 g AgNO3 ( 1 mol / 169.87 g ) ( 1 mol Cu / 2 mol AgNO3 ) ( 63.456 g / 1 mol ) = 0.747 g Cu