Определение жесткости воды.
анализ
2 months ago 00:06:26 1
2 months ago 00:03:34 1
2 months ago 00:08:21 1
2 months ago 00:07:37 2
2 months ago 01:00:25 1
3 months ago 01:18:58 1
3 months ago 00:01:00 1
3 months ago 00:01:00 1
3 months ago 00:14:11 1
![[C] и [С’] определяем твёрдость и мягкость](https://sun9-78.userapi.com/5stu0WE7fn5-D9gkM58DmiYnkXGVs5gA8TSUqw/HhaWAM_nMpc.jpg)
3 months ago 03:01:41 1
4 months ago 00:03:20 3
4 months ago 00:09:27 1
4 months ago 00:20:46 1
4 months ago 00:01:39 1
4 months ago 00:01:00 1
4 months ago 00:01:00 1
4 months ago 00:14:48 1
4 months ago 00:01:00 1
4 months ago 00:00:57 1
4 months ago 00:11:50 1
4 months ago 00:25:31 1
4 months ago 00:01:00 1
4 months ago 00:00:51 1
4 months ago 00:01:00 1
