Complete the mining components/ variables given as x and y in the following reactions:
(a) Pb(NO3)2 (aq) + 2KI (aq) → PbI2(x) + 2KNO3 (y)
(b) Cu(s) + 2AgNO3 (aq) → Cu (NO3)2 (aq) + x (s)
(a) Pb(NO3)2 (aq) + 2KI (aq) → PbI2(x) + 2KNO3 (y)
x is solid (s).
y is aqueous (aq)
(b) Cu(s) + 2AgNO3 (aq) → Cu (NO3)2 (aq) + x (s)
x is 2Ag 
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