What are the answer choices?
Answer: Formation of hydrogen iodide will occur.
Explanation:
When molecule of hydrogen gas
and molecule of iodine gas
collide with proper orientation and with sufficient amount of energy. This collision of the two different molecules of gases will result in the formation of hydrogen iodide.
The balanced chemical equation of the reaction will written as:

You multiply 32 by 2, since there are two hydrogens in every water molecule.
Answer:
The answer is "2.5 mole"
Explanation:
The reaction for producing
can be defined as follows:
Reaction:

According to the above reaction, to produce 2 moles of
we need 1 mole of nitrogen:
So, according to the question to produce 5.0 mole
the required
:

To produce 5.0 mole
we need 2.5 mole 