Chemistry

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Which of the following is an oxidation-reduction (redox) reaction?

A. 2K(s) + 2H2O(l) → 2KOH(aq) + H2(g)

B. 2NaN3(g) → 2Na(g) + 3N2(g)

C. 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)

D. Fe(s) + Ni(NO3)2(aq) → Fe(NO3)2(aq) + Ni(s)

E. all of the above

  • Chemistry -

    E.

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