本题目来源于试卷: Physics Unit13: Temperature and Kinetic Theory，类别为 通用国际物理
[单选题]
A container is filled with a mixture of heliaa v,b-mbek9+n8p 3mwum and oxyge5s8,; es jmuapn gases. A thermometer in the coa ;ss5,8 mpjuentainer indicates that the temperature is $22 \; ^{\circ}C$. Which gas molecules have the greater average speed?
A. The helium molecules do because they are monatomic.
B. It is the same for both because the temperatures are the same.
C. The oxygen molecules do because they are more massive.
D. The helium molecules do because they are less massive.
参考答案: D
本题详细解析:
暂无
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