important equations in chemistry class 10 chapter 1

1:48:59

1:30:16

1:19:47

1:36

1:36

5:21

17:34

14:12

14:54

5:20

3:33

1:37:58

1:46:50

1:54:05

1:45:22

23:47

1:47:03

1:44:30

1:28:05

1:42:01

1:52:19

1:39:58

1:50:33

1:43:04

1:13:11

1:04:43

4:30

18:00

5:52

1:15

8:10

21:05

4:06

21:05

1:49

12:53

21:05

2:53

12:12

5:44