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["["부압 하에서 고정된 공간 내의 산소體体积的计算

2018-07-29View Original

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), (62mm의 압력에서 m3 공간 내 산소의 분량은 얼마인가? 구해주세요! 많은 도움을 주셔서 감사합니다!
Reply #22018-07-29
), (이는 어떤 환경인가요? 공기 환경인지,无空气环境?物料介质是什么?
Reply #32018-07-29
), (이는 공기 환경입니다.无物料。具体的意思就是:一个标准空间内,在标准压力,标准温度进行抽真空,当空间内内真空度为-62mmHg时,空间内氧含量为多少?
Reply #42018-07-30
), (이는 공기의 원래 비율이므로,不会有影响
Reply #52018-07-30
), (이 압력도 대략적으로海拔高度1大气压,在这个高度上的空气中氧含量是多少呢?气象学给出的结论是:在0~km的大气层范围内,由于强烈的垂直对流作用,空气中氮气和氧气的体积分数基本保持不变(特别轻的气体,如氢,特别重的气体,如SO2不在此列哈)。
Reply #62018-07-30
), (이 포스팅은 2218-7-31 11:43에 수정되었습니다. 만약 공기라면, 어떤 압力和多低的压力,空气中氧的体积分数永远是大约21%%。在海拔不是特别高的的生物圈内皆如此)不需要计算。
Reply #72018-08-07
), (5층의 답변, 예를 들어 1立方的空气,抽出 0.5立方,剩余的 0.5立方他还是空气,质量分数不变
Reply #82018-08-10
), (就是正常空气中氧含量比例,你可以理解为一个瓶子中装满了标准压力的空气,瓶子被挤压排除一部分空气,然后封闭、复原。里面空气组分依然是之前的组分,并没有变化。

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