How many moles of water can be produced from the reaction of 2.0 moles of hydrogen gas is reacted with 2.5 moles of oxygen gas? 2H₂(g)+O₂(g) → 2H₂O(l)

a. 5.0 mole H₂O
b. 4.5 mole H₂O
c. 2.5 mole H₂O
d. 2.0 mole H₂O

I would really appreciate an explanation of the answer rather than just the answer itself.
Thank you in advance :)

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.