Molecular Energy With Relation to Number of Molecules

[Priyadarshini]

Homework Statement

Which solid-line curve most accurately represents the distribution of molecular energies in a gas at 500 K if the dotted-line curve represents the corresponding distribution for the same gas at 300 K?

Homework Equations

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The Attempt at a Solution

Not sure how this works.
Higher the temperature, more the energy, so that rules out (D)
But that still leaves options A,B and C

 

[Bystander]

What are the areas under the curves?

 

[Priyadarshini]

What are the areas under the curves?

The total energy?

 

[Bystander]

What's the y-axis?

 

[Priyadarshini]

What's the y-axis?

Number of molecules.