Respuesta :

Molar mass of
 
HC2H3O2 = 1 + 12.2 + 1.3 + 16.2 = 60 g/mol-1

1 mol of HC2H3O2 -------------------> 60 g
1,26.10^-4 mol --------------------------> x g

x = 1,26.10^-4 . 60

x = 0,00756 g





1.26*10^(-4) mol HC2H3O2* (60 g HC2H3O2/ 1 mol HC2H3O2)= 7.56*10^(-3) g HC2H3O2.

The final answer is 7.56*10^(-3) g HC2H3O2~
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