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 :)

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

What are the 4 phases of matter in order of increasing engery content?

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?