Question

In which flask do the molecules have the greatest average speed:

a. Flask A (T = 300 K)
b. Flask B (T = 400 K)
c. Flask C (T = 200 K)
d. Flask D (T = 350 K)

Answer 1

Molecules in Flask B (T = 400 K) have the greatest average speed since the average molecular speed is directly proportional to the square root of the temperature, and Flask B has the highest temperature.

Step-by-step explanation:

In the context of the kinetic theory of gases, the average speed of gas molecules is directly proportional to the square root of the temperature of the gas (measured in Kelvin).

Therefore, among the flasks A (T = 300 K), B (T = 400 K), C (T = 200 K), and D (T = 350 K), the molecules in Flask B (T = 400 K) have the greatest average speed because it has the highest temperature.