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a beaker of 98°c liquid was set on a table in a 20°c lab. a group of st…

Question

a beaker of 98°c liquid was set on a table in a 20°c lab. a group of students monitored the temperature of the liquid for 45 minutes but had to leave class when the bell rang. when they return tomorrow, what will be the temperature of the liquid? time passed temperature 0 minutes 98°c 15 minutes 88°c 30 minutes 80°c 45 minutes 73°c a. the temperature of the liquid will be 0°c because heat will continue to leave the beaker until it reaches freezing. b. the temperature of the liquid will be 20°c because once it reaches the temperature of the room, it will be at equilibrium. c. the temperature of the liquid will be 98°c because heat from the lab will start to warm it back up. d. the temperature of the liquid will be 0°c because that is the lowest temperature it can reach.

Explanation:

Step1: Comprender el fenómeno térmico

La temperatura del líquido disminuye con el tiempo al estar en un ambiente de menor temperatura (20°C).

Step2: Analizar los datos de temperatura

A medida que transcurren los minutos (0, 15, 30, 45), la temperatura del líquido disminuye de 98°C a 73°C.

Step3: Considerar la temperatura límite

El líquido seguirá enfriándose hasta alcanzar el equilibrio térmico con el ambiente, es decir, 20°C. Pero mientras no llegue a la temperatura de congelación (0°C para agua pura, aunque no se especifica que sea agua), no se congelará.

Answer:

B. El temperatura del líquido se mantendrá en 20°C una vez que alcance el equilibrio térmico con la temperatura del ambiente.