Question

Dada a equação a seguir: As massas molares dos seus componentes, respectivamente, são:

a) 200g/mol ; 300g/mol ; 40g/mol ; 120g/mol.
b) 300g/mol ; 40g/mol ; 400g/mol ; 107g/mol.
c) 400g/mol ; 40g/mol ; 142g/mol ; 107g/mol.
d) 142g/mol ; 300g/mol ; 190g/mol ; 120g/mol.
e) 400g/mol ; 40g/mol ; 120g/mol ; 500g/mol.

Answer 1

Resposta:c) 400g/mol ; 40g/mol ; 142g/mol ; 107g/mol.

Explicação:

1 Fe2(SO4)3 + 6 NaOH---> 3 Na2SO4 + 2 Fe(OH)3

     1.400 g       6.40 g           3.142 g         2. 107