Respuesta:
+1 +6 -2
K2Cr207
+2+12-14= 0
14-14=0
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Respuesta:
+1 +6 -2
K2Cr207
+2+12-14= 0
14-14=0
b) (2) (+1) + (2) (+6) + (7) (-2)
c) (+2) + (1) (+6) + (+2)
d) (+3) + (+6) + (-2)