Question

You have 2.75 moles of O2, how many moles of H2O will you make?

Answer 1

2H₂ + O₂ → 2H₂O

According to the reaction:

n(H₂O) = 2n(O₂) $= 2 \times 2.75 = 5.5 \;mol$

Answer: 5.5 mol