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Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield ammonia: N2 (g) + 3H2 (g) . 2NH3 (g)A 7.1-g sample of N2 requires __________ g of H2 for complete reaction.

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Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield ammonia: N<sub>2</sub> (g) + 3H<sub>2</sub> (g) . 2NH<sub>3</sub> (g)A 7.1-g sample of N<sub>2</sub> requires __________ g of H<sub>2</sub> for complete reaction.






 
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