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Two containers of different noble gas are both kept at room temperature ($293 \text{ K}$). Container 1 has very light helium atoms. Container 2 has very heavy neon atoms. The gas from each container gives a distribution curve on the graph above.

Which curve belongs to which gas?

A

The dashed line is for the helium; and the solid line is for the neon.

B

The dashed line is for the neon; and the solid line is for the helium.

C

There is not enough information to determine which line belongs to which gas.

D

The curves clearly show a difference in temperature. The given information must be incorrect.

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