A equação quimica: 2Mg(OH)2 + xHCl --------- 2MgCl2 + 4H2O? fica estequiometricamente correta se x for igual a:
a) 1
b) 2
c) 3
d) 4
e) 5
a) 1
b) 2
c) 3
d) 4
e) 5
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