Answer:
6
Explanation:
Hello,
In this case, based on the given balanced chemical reaction, one notices that at the reactants there are six hydrogens as its stoichiometric coefficient is 3 and its subscript 2, therefore by multiplying the result is 6. On the other hand, at the products, we see 2 as the ammonia's stoichiometric coefficient and 3 as the hydrogen's subscript, therefore, by multiplying the result is 6 which substantiates the reaction as correctly balanced.
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