In the reaction of nitrogen gas, N2, with hydrogen gas, H2, to form ammonia gas, NH3, how many moles of hydrogen are needed to react with two moles of nitrogen? N2 + 3H2 → 2NH3 Select one: A. 5.710 moles B. 4 moles C. 2 moles D. 8 moles E. 6 moles

Answer : The correct option is, (E) 6 moles.

Explanation : Given,

Moles of nitrogen = 2 moles

The given balanced chemical reaction is:

From the balanced chemical reaction we conclude that,

As, 1 mole of nitrogen gas react with 3 moles of hydrogen gas

So, 2 mole of nitrogen gas react with moles of hydrogen gas

Therefore, the number of moles of hydrogen gas needed to react with 2 moles of nitrogen gas is, 6 moles.