已知氢气与氧气的温度相同,请判断下列说法哪个正确? [ 8.5 分 ] -题库考试答案搜索网

已知氢气与氧气的温度相同,请判断下列说法哪个正确? [ 8.5 分 ]

单选题

2021-09-02 13:28

A、氧分子的质量比氢分子大,所以氧气的压强一定大于氢气的压强.
B、氧分子的质量比氢分子大,所以氧气的密度一定大于氢气的密度.
C、氧分子的质量比氢分子大,所以氢分子的速率一定比氧分子的速率大.
D、氧分子的质量比氢分子大,所以氢分子的方均根速率一定比氧分子的方均根速率大.

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正确答案

D

试题解析

标签：文鼎教育乐山师范学院热学

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