# Internal energy of Ideal gas

Level pending

Ideal gases $$A$$, $$B$$, and $$C$$ are contained in three different boxes which have exactly the same volume. The numbers of ideal gas molecules in box $$A$$, $$B$$, and $$C$$ are $$6.02 \times 10^{23}$$, $$12.04 \times 10^{23}$$, and $$18.06 \times 10^{23},$$ respectively. The temperatures of these gases are $$200$$ K, $$300$$ K, and $$400$$ K, respectively. Then what is the ratio of the internal energy of these gases?

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