一瓶氦气和一瓶氮气粒子数密度相同 分子平均平动动能相同 而且它们都处于平衡状态 则它们___ A b
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一瓶氦气和一瓶氮气粒子数密度相同,分子平均平动动能相同,而且它们都处于平衡状态,则它们___ A bottle of Helium and A bottle of Nitrogen have the same particle density, the same average translational kinetic energy, and they are in equilibrium, so they have __
A.温度相同、压强相同; the same Temperature, the same Pressure;
B.温度、压强都不相同; different Temperature, different Pressure;
C.温度相同,但氦气的压强大于氮气的压强; the Pressure of Helium is greater than that of Nitrogen at the same temperature;
D.温度相同,但氦气的压强小于氮气的压强; the same Temperature, but the Pressure of Helium is less than the Pressure of Nitrogen.

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因为平均平动动能相同,就是温度相同;因为数密度相同,即 n 相同;p=nkT故压强相同。
