Respostas

2014-06-02T09:12:10-03:00
2014-06-02T09:35:34-03:00
3.1 + 31.1 + 16.4
3+ 31 +64
98g/mol 

Al(OH)3
27.1 + 16.3 + 1.3 
27 + 48 + 3
78g/mol

O3
16.3
48g/mol

H2Cr2O7
1.2 + 25.2 + 16.7 
2 + 104 + 112
218g/mol