A person makes a quantity of iced tea by mixing 500 g of hot tea (essentially water) with an equal mass of ice at its melting point. Assume the mixture has negligible energy exchanges with its environment. If the tea’s initial temperature is Ti
90°C, when thermal equilibrium is reached what are (a) the mixture’s temperature Tf and (b) the remaining mass mf of ice? If Ti
70°C, when thermal equilibrium is reached what are (c) Tf and (d) mf?