Final answer:
To find the number of moles of H₂O produced in a reaction, balance the chemical equation and then apply stoichiometric relationships to the given amount of reactants to determine the amount of products formed.
Step-by-step explanation:
The question relates to the stoichiometry of chemical reactions, specifically finding the number of moles of H₂O produced in various reactions. The answer to this type of question involves using balanced chemical equations to determine the stoichiometric relationships between reactants and products. For instance, to balance the equation involving NH₃ and O₂, one would first find the balanced equation, which is 4NH₃ + 5O₂ → 4NO + 6H₂O. Using this balanced equation, we can see that for every 4 moles of NH₃, 6 moles of H₂O are produced. Therefore, if we have 1.65 moles of NH₃ reacting, the number of moles of H₂O produced would be 1.65 moles NH₃ × (6 moles H₂O / 4 moles NH₃) = 2.475 moles of H₂O.