So what's the mole fraction of B in the gas phase?
那么B在气相中的摩尔分数是多少？
It's the molar fraction of B in the gas phase times the total pressure.
这分压等于气相中b的摩尔分数，乘以总压强。
Or reactants like B, which are in the gas phase.
或者像B那样的反应物它是气态的。
The volume of gas in tube a is three times that in tube b.
试管A内的气体体积是试管B内气体体积的三倍。
The volume of gas in tube a is three times that in tube b.
试管A内的气体体积是试管B内气体体积的三倍。
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