A 48.6g sample of copper at 99.8∘C is carefully placed into an insulated container containing 185g of water at 18.5∘C. Calculate the final temperature when thermal equilibrium is reached. Assume there is no energy transferred to or from the container. Specific heat capacities:
Cu​=0.385J/g⁻¹∘C⁻¹
H₂O​=4.184J/g⁻¹∘C⁻¹