2H₂ + O₂ → 2H₂O
You will need to use stoichiometry to solve this problem. The stoichiometric factor will need to relate H₂ and H₂O. From the equation, we see that for every two H₂ molecules that react, two H₂O molecules are produced, so the factor is [tex]\frac{2H_{2} O}{2H_{2} }[/tex]. The twos reduce, making this a one-to-one ratio.
[tex]2.0169molH_{2} (\frac{2molH_{2} O }{2molH_{2} } )=2.0169molH_{2} O[/tex]
a. 2.016 mol H₂O
Hint: Because of significant figures, the other three answers would be wrong by default.