Nitrogen and Hydrogen Gases Are Combined at High Temperatures and Pressures

Nitrogen and hydrogen gases are combined at high temperatures and pressures to produce ammonia, NH₃. If 104.7 g of N₂ are reacted with excess H₂, how many moles of NH₃ will be formed?

A) 3.737 mol
B) 2.491 mol
C) 7.473 mol
D) 5.605 mol
E) none of these