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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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:

G1 Physics · Accepted Answer

Average translational kinetic energy per molecule depends only on temperature: K(avg) = (3/2)kT. Since both gases are at the same temperature, the ratio is 1:1.