00:01
Question number 66.
00:07
What is the more fraction of oxygen gas in air? so we can check this one all from table 5 .3.
00:18
Table 5 .3 leaks some composition of air.
00:24
You know, air is a mixture of gases.
00:32
We have different gases.
00:36
So on this table, this table, this table, 5 .3 list the percentage composition by percentage by volume component of air and it listed there we have carbon dioxide we have oxygen we have nitrogen we have add -off and so when i check for oxygen it listed 21 so the other make the remaining part of that unrepresented by volume of air so we have to apply apogadros apogadros equal volume of all gases at the same temperature and pressure contain the same number of molecules we can say that the volume is proponent to the number of more of ag because they are taken at the same temperature and pressure so even though this lists the percentage by volume we can also use it to get the more ratio of oxygen because the particle by the volume relate to more so mold of oxygen i mean more fraction more fraction of oxygen is going to be mole of oxygen apparagosalore is process of follow.
02:31
I will say percentage by volume of oxygine divided by total percentage volume.
02:43
And that is 21 for oxygen divide by if you add everything together with it for other to be 100.
02:50
So oxygen is 21%...