Chemistry stoichiometry?

Question

I need the equation for this. I know how to solve I just still cant understand how to et the equation from word problems. it is... Silver metal can be recovered from waste silver nitrate solutions by reaction with copper metal. What mass of silver can be obtained using 50g of copper..... thanks

Answer 1

Cu + AgNO3 --> Ag + Cu(NO3)2

Now to balance it:

Cu + 2AgNO3 --> 2Ag + Cu(NO3)2

Answer 2

1. Write and balance the equation for the reaction.
2AgNO3 + Cu = 2Ag + Cu(NO3)2

2. Set up the proportionality
50g Cu/Atomic Wt Cu = Wt Ag/2x(Atomic Wt Ag)

3. Plug in the Atomic Wt's and solve for Wt Ag