6. Four identical 1.0 L flasks contain the gases He, Cl2, CH4, and NH3, each at 0°C and 1 atm pressure. Which gas has the highest density?
(A) He
(B) Cl2
(C) CH4
(D) NH3
(E) all gases the same

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考題觀念 本題考的是:在相同溫度、壓力與...
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