The reaction used 82 g of the unknown chemical.
The word equation is
Chemical 1 + Chemical 2 → Products
32 g + x g → 114 g
The Law of Conservation of Mass tells us the total mass of the reactants must equal the mass of the products. Then
32 g + x g = 114 g
x = 114 – 32 = 82
The mass of Chemical 2 was 82 g.
