00:01
Okay, now we do problem 130.
00:03
Several chemical reactions has been proposed for the formation of organic compounds from inorganic precursors.
00:11
Here is one of them.
00:13
Okay, let me write that equation.
00:15
So we do the problem.
00:20
1 -30 plus zoom for cfs.
00:35
Okay.
00:48
And then we have piraeza.
00:55
Let's see.
01:21
Identify ion is f .e .s and f .e .s.
01:39
2.
01:39
A.
01:42
Identify ions in and yeah.
02:03
So we have the same ion, f .e .s .2 and s minus 1.
02:14
At 1 minus, we should put the number before the jack here.
02:22
Okay? and we don't write minus here.
02:28
We don't write one here.
02:30
We only write the size if the jack is one.
02:37
And now b...