00:02
Okay, so for this question, first, all we need to do is to calculate the more of the nitrogen that used in the reaction.
00:16
So it says we know the ideal gas law, pv equals to nrt.
00:22
So initial state, the total amount of the nitrogen, which simply equals to pv time over rt.
00:34
So the p is 768 times 133 par.
00:43
And the v is given in the previous question 5 .4 times 10 to minus 3, because the unit here is meter.
00:54
So the r, 8 .314t, here is 25 degrees c, so it's 298 .98.
01:06
And here, the mores of the nitrogen is 7 ,6, 8 times 1 .33 times 5 .4 over 1 ,000 over 8 .1314 over 298.
01:29
And it's equal to around 0 .223 more.
01:39
And also, this is more of the total molecules in the gas phase.
01:50
So now what we can calculate is what is the amount of the acetone in the gas phase.
02:00
And we can do the calculations here, which is calculate, which is mass over more mass...