一道英语化学题

来源：百度知道 编辑：UC知道 时间：2024/05/03 10:04:33
Three cylinders labeled A, B, C, are all at the same temperature. The volumes of the containers are 2.0 L, 4.0 L, and 6.0 L, respectively. Cylinder A contains 0.679 grams of neon gas at a pressure of 120 mmHg, cylinder B contains 2.45 grams of nitrogen gas at a pressure of 210 mmHg, and cylinder C is completely empty at the start. If the contents of A and B were completely transferred to C (assuming ideal conditions), what would the pressure become in cylinder C?
(A) 0.25 atm
(B) 180 mmHg
(C) 330 mmHg
(D) 675 mmHg
(E) 1980 mmHg
答案是B，求解题过程，谢谢

温度不变，压强与体积成正比例相关。
采用气体分压和总压来做：总压＝分压1+分压2
对 neon gas 来说，体积由2变6,增大了两倍，即变为原来的3倍，气压变为原来的三分一：120*(1/3)=40
对 nitrogen gas 来说，体积由4变6,增幅为二分一，即为原来的二分之三，气压变为原来的三分之二:210*(2/3)=140
总压为分压和：40+140 ＝180

严谨的公式推导做不出来了（以前没认真学^_^),请别见怪。
希望对你有所帮助。