A 31.2 g wafer of pure gold initially at 69.7∘C is submerged into 63.9 g of water at 27.9∘C in an insulated container. The specific heat capacity for gold is 0.128 J/(g* ∘C) and the specific heat for water is 4.18 J/(g*∘C). What is the final temperature of both substances at thermal equilibrium?