1/20
C12H22011
Hint: 1 choice
2/20
Br2
3/20
CH3OH
Hint: 1 choice
4/20
O2
5/20
F2
6/20
S8
7/20
I2
8/20
N2
11/20
H2
13/20
Cl2
14/20
C3H8
Hint: 1 choice
16/20
C2H5OH
Hint: 1 choice
17/20
CH3COOH
Hint: 1 choice
18/20
H202
19/20
P4
20/20
C6H1206
Hint: 1 choice