>>>這題要怎麼解?>>>看最佳解, 或是查大氣成分比例
氧:20.9% → 18%
氮:79.1% → 71.19%
20.9%:79.1% = 18 :氮
氮 = 71.19%
其餘空氣為(1 - 71.19% - 18%) = 10.81 %
這題要怎麼解?