氧气在空气中的体积分数为21%
氧气体积为8L,空气体积=8÷21%=38.1L
空气质量=密度×体积=1.293×38.1=49.26g
成年人每分钟大约吸入8L氧气,大致需要空气多少L.这些空气的质量约多少g 标准大气压下空气密度为1.293g/L
成年人每分钟大约吸入8L氧气,大致需要空气多少L.这些空气的质量约多少g 标准大气压下空气密度为1.293g/L
化学人气:875 ℃时间:2019-12-12 08:40:03
优质解答
我来回答
类似推荐
猜你喜欢
- 1已知三角形abc中的三边abc面积为a^2-(b-c)^2则cosa=
- 2小丽和爸爸今年的年龄和为40岁,小丽比爸小28岁,4年前小丽几岁
- 3你怎么了,汤姆?用英语怎么说
- 4_______that time,the reform had begun to take effect,and the economy had begun to take off .
- 5用适当的介词填空.Who is the teacher talking___?Tom,one of his studens.
- 6物体在一个二力平衡力的作用下,处于匀速直线运动状态,若其中一个力忽然消失,则
- 7一个长方体所有棱长的和是96厘米,相交于同一顶点的三条棱长的比是3:4:5.这个长方体的体积是多少?
- 8一道化学填空题(关于原子得失电子)
- 9Young people should learn as much as they can in their first jobs and remember it will take some time to really get good
- 10小红在会议室里各抒已见 怎样改病句