To completely convert 9. 0 moles of hydrogen gas (h2) to ammonia gas, 3.0 moles of nitrogen gas (n2) are required.
<h3>What are moles?</h3>
The mole is a SI unit of measurement that is used to calculate the quantity of any substance.
<h3 />
The given reaction is 
By the stoichiometry rule of ratio hydrogen: nitrogen
3 : 1
The reacted moles of nitrogen is equals to H/3 moles of reacted hydrogen
So, moles of nitrogen

Thus, 3.0 moles of nitrogen gas (n2) are required.
Learn more about moles
brainly.com/question/26416088
#SPJ4
IM THINKING THEY BELONG IN THIS CLASS OF ELEMENTS VILL B.
Hope i Helped
The number of protons in an atom can be determined by the element's atomic number, and the number of electrons can be determined by subtracting by atomic mass by the atomic number.
I think this is True.
Aerobic organisms are more energy-efficient than anaerobic.
~ Good luck!