Answer:

Step-by-step explanation:
a) Balanced equation
We know we will need an equation with masses and molar masses, so let’s gather all the information in one place.
M_r: 63.55 169.87 187.56 107.87
Cu + 2AgNO₃ ⟶ Cu(NO₃)₂ + 2Ag
m/g: 2.75
(b) Moles of Cu(NO₃)₂
(i) Calculate the moles of Ag

(ii) Calculate the moles of Cu(NO₃)₂
The molar ratio is 1 mol Cu(NO₃)₂:2 mol Ag

(c) Moles of Cu
The molar ratio is 1 mol Cu:2 mol Ag

(d) Moles of AgNO₃
The molar ratio is 2 mol Ag:2 mol AgNO₃
