Answer:
The velocity would be if m was meters +1200
Explanation:
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Charge ion for Mg is 2+
While 2+ is represents two electrons that had been released. It donors two electrons to oxide ions as oxide ions are 2-. 2- is represents as electron acceptor for two electrons. At the end, the empirical formula for this reaction is Mg2O2
I believe it's D. A catalyst causes an increases the rate of a reaction without itself being consumed.