Help with chemistry pleaseeee.

Consider the unbalanced equation for the decomposition of silver nitrate:
AgNO3(s) --->Ag(s)+NO2(g)+O2(g)

1. Write the balanced equation for the reaction.
2. When 54.0g of AgNO3 is heated, 4.60g of O2 is formed. How many grams of Ag is also formed?

2 AgNO3(s) ----------> 2 Ag(s) + 2 NO2(g) + O2(g)

? g Ag = 54.0 g AgNO3 x 216 g Ag / 340 g AgNO3 = 34.3 g Ag.