question_answer

A flask of \[10\text{ }d{{m}^{3}}\]capacity contains \[{{O}_{2}}\] gas at \[100\text{ }kPa\]and\[300\text{ }K\]. The gas pressure is reduced to \[10\text{ }Pa\]by attaching the flask to a pump. If now \[2.8\text{ }g\]of \[{{N}_{2}}\] is introduced, assuming ideal behaviour, the final pressure in the flask is ______. \[(R\approx 8.3\,kPa\,d{{m}^{3}}{{K}^{-1}}mo{{l}^{-1}})\]

Answer:

24.9