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dexar [7]
3 years ago
8

Question 17(Multiple Choice Worth 2 points)

History
1 answer:
Reptile [31]3 years ago
6 0

Answer: D

A catalyst is a substance that alters the reaction and doesn't involve in the reaction.So if the Manganese was a catalyst the mass would not have decreased,it would just continue aletring the reaction until its used up.

The Manganese is not acting as a catalyst

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