75.0 mL of a pure liquid at 245 K is mixed with 100.0 mL of the same pure liquid at 365. K. What is the final temperature of the mixture?

Question

Quizplus · Accepted Answer

The correct answer is D.The heat lost by the hot liquid is equal to the heat gained by the cold liquid.Qlost = Qgainedm1 * c * (T1 - Tf) = m2 * c * (Tf - T2)where m is the mass, c is the specific heat capacity, T is the temperature, and the subscripts 1 and 2 refer to the hot and cold liquids, respectively.Assuming that the specific heat capacity of the liquid is constant, we can simplify the equation to:m1 * (T1 - Tf) = m2 * (Tf - T2)Substituting the given values, we get:75.0 mL * (365. K - Tf) = 100.0 mL * (Tf - 245. K)Solving for Tf, we get:Tf = 314 K

750 ML of a Pure Liquid at 245 K Is