Complete the balanced equations for these reactions that were observed in the lab.
___Zn (s) + ___ HCl (aq) → ZnCl2 (aq) + ___ H2 (g)
___ H2 (g) + ___ O2 + flame → ___ H2O (g)
___ H2O2 (l) → ___ H2O (l) + ___ O2 (g)
___ O2 (g) + C + flame → ___ CO2 (g)
(the carbon came from the glowing splint)
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