Question

Linda has two glasses of pineapple juice. Glass A has 60 grams of juice at 30 °C. Glass B has 60 grams of juice at 40 °C.

Which of the following steps will make the kinetic energy of the molecules of the juice in both glasses equal?

Add 15 grams of juice at 30 °C to Glass A
Add 15 grams of juice at 40 °C to Glass B
Decrease the temperature of juice in Glass B by 10 °C
Increase the temperature of juice in Glass A by 30 °C

Answer 1

Decrease the temperature of juice in glass B by 10°C