two cups of coffee, one that is at 10°c and one that is at 20°c, are mixed. which statement about the…

two cups of coffee, one that is at 10°c and one that is at 20°c, are mixed. which statement about the temperature of the mixture is correct?\nthere is no kinetic energy transfer so the temperature of the coffee in the warmer cup is the final temperature.\nthe kinetic theory dictates that the temperature of the coffee in the cooler cup is the final temperature.\nenergy is transferred from faster moving molecules to slower moving molecules, and the result is the average of 15°c.\nenergy transfer occurs as the molecules collide, and the result is additive; the final temperature is 30°c.

two cups of coffee, one that is at 10°c and one that is at 20°c, are mixed. which statement about the temperature of the mixture is correct?\nthere is no kinetic energy transfer so the temperature of the coffee in the warmer cup is the final temperature.\nthe kinetic theory dictates that the temperature of the coffee in the cooler cup is the final temperature.\nenergy is transferred from faster moving molecules to slower moving molecules, and the result is the average of 15°c.\nenergy transfer occurs as the molecules collide, and the result is additive; the final temperature is 30°c.

Answer

Answer:

C. Energy is transferred from faster moving molecules to slower moving molecules, and the result is the average of 15°C.

Explanation:

Step1: Understand heat transfer

Heat transfers from hot to cold.

Step2: Consider kinetic - energy of molecules

Faster - moving molecules are in the hotter substance.

Step3: Calculate final temperature

When equal - amounts of substances mix (assuming no heat loss), final $T=\frac{10 + 20}{2}=15^{\circ}C$.