Question

hallar el peso melecular de los siguientes elementos , dioxido de carbono ,acido sulfurico , oxido ferroso . hidruro de aluminio . acido fosforico

Answer 1

dióxido de carbono: CO2

PM CO2

C: 1 x 12 = 12 g/mol
O: 2 x 16 = 32 g/mol
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       PM =  44 g/mol

H2SO4

H: 2 x 1 = 2 g/mol
S: 1 x 32 = 32 g/mol
O: 4 x 16 = 64 g/mol
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       PM = 98 g/mol

oxido ferroso: FeO

Fe: 1 x 56 = 56 g/mol
 O: 1 x 16 = 16 g/mol
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          PM =   72 g/mol

hidruro de aluminio: AlH3

Al: 1 x 27 = 27 g/mol
 H: 3 x 1 = 3 g/mol
`````````````````````````````
        PM = 30 g/mol

acido fosfórico: H3PO4

H: 3 x 1 = 3 g/mol
P: 1 x 31 = 31 g/mol
O: 4 x 16 = 64 g/mol
```````````````````````````````
         PM = 98 g/mol