Зелёное пламя (горение этилата бора)
Этиловый спирт конц.серная кислота ортоборная кислота
4 months ago 00:35:42 1
4 months ago 00:00:10 1
4 months ago 01:19:46 1
4 months ago 00:03:22 1
4 months ago 02:48:25 1
4 months ago 00:03:52 1
4 months ago 00:29:32 1
4 months ago 00:03:44 6
5 months ago 00:10:46 1
5 months ago 00:02:08 1
5 months ago 00:05:52 4
5 months ago 00:56:35 1
5 months ago 00:03:19 1
5 months ago 00:08:48 1
6 months ago 01:24:39 1
6 months ago 00:41:13 1
6 months ago 00:43:28 1
6 months ago 00:00:16 1
7 months ago 00:04:38 1
7 months ago 00:53:07 1
7 months ago 00:04:37 1
7 months ago 00:00:35 1
7 months ago 00:38:03 1
7 months ago 01:31:46 1
