when two intermediate chemical equations are combined, the same substance that appears in the same phase can…
when two intermediate chemical equations are combined, the same substance that appears in the same phase can be canceled out, provided that\nit is a reactant in one intermediate reaction and a catalyst in the other reaction.\nit is a product in one intermediate reaction and a catalyst in the other reaction.\nit is a reactant in one intermediate reaction and a product in the other reaction.\nit is a reactant in both of the intermediate reactions.
Answer
Answer:
C. It is a reactant in one intermediate reaction and a product in the other reaction.
Brief Explanations:
En química, cuando se combinan ecuaciones químicas intermedias, se cancela una misma sustancia en la misma fase cuando es reactivo en una y producto en la otra. Esto ayuda a obtener la ecuación global.