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  4. A flask contains hydrogen and oxygen in the ratio of 2: 1 by mass at temperature 27° C. The ratio of average kinetic energy per molecule of hydrogen and oxygen respectively is:

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Q. A flask contains hydrogen and oxygen in the ratio of $2: 1$ by mass at temperature $27^{\circ} C$. The ratio of average kinetic energy per molecule of hydrogen and oxygen respectively is:

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Solution:

$ K _{ av }=\frac{5}{2} kT $
Ratio $=1: 1$