Two different gases are stored in separate closed containers. if both gases have a temperature of 50°c, which statement is true?

a. the thermal energies of gas molecules in the two containers are unrelated.

b. the gas molecules in both containers will absorb heat from the surroundings.

c. the molecules in one gas will transfer energy to the molecules in the other gas.

d. the gas molecules in both containers have the same average kinetic energy.

Option (D) is the correct answer.

Explanation:

When a gas contains vibrational, translational, and rotational kinetic energies then their sum is known as average kinetic energy.

Therefore, when two molecules are mixed together at a certain temperature then the molecules of respective gases collide in each of the containers. Thus, these particles will have vibrational, translational, and rotational kinetic energies, that is, average kinetic energy.

Hence, we can conclude that the gas molecules in both containers have the same average kinetic energy.

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"