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Answer:
They are different ions of the same element.
Explanation:
on Quizlet
The balanced equation would be
3H2 + N2 ———> 2NH3
Answer:
2. Co(NO3)2 + H2
Explanation:
Hello,
In this case, we are evidencing a simple displacement reaction wherein the cobalt is able displace the hydrogen to produce cobalt (II) nitrate and gaseous hydrogen as a result of cobalt's higher activity:

Therefore, answer is 2. Co(NO3)2 + H2.
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