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1 HNO3
2 Al(OH)3
3 Mn207
4 Pd(OH)2
5 HCl
6 AlF3
7 H2S
8 Pb(OH)4
9 N2O5
10 MgSO4
11 C02
12 CuH2
13 KBr
14 P2O5
15 H3PO4
16 LiBr03
17 NaCl
18 Fe2O3
19 H2S04
20 PH3
13
2
14
7
6
11
8
3
12
4
10
16
17
9
18
1
15
5
20
19