本题目来源于试卷: Particulate Nature of Matter B.1 Thermal Energy Transfers，类别为 IB物理学
[单选题]
A sealed container contain ;ndsuo.j38 gmx :szi.r+be7s avnu(l) pv46as a mixture of hydrogen and nitrogen gas.
The ratio ${mass\,of\,a\,hydrogen\,molecule}{mass\,of\,a\,nitrogen\,molecule}$=$\frac{1}{7}$The ratio $\frac{average\,kinetic\,energy\,of\,hydrogen}{average\,kinetic\,energy\,of\,nitrogen}$is
A. 7
B. $\frac{1}{7}$
C. 1
D. Dependent on the concentration of each gas.
参考答案: C
本题详细解析:
Exp;anation: The container is sealed. The two gases are in thermal equilibrium, which means they have the same temperature. The temperature is a measure of the average kinetic energy, so both gases have the same average kinetic energy, which makes the ratio of their average kinetic energies to be 1.
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