Final answer:
To find the theoretical yield of HNO₃, one must know the mass of NO₂ reacted, convert it to moles, use stoichiometry to find moles of HNO₃, and then convert those to grams.
Step-by-step explanation:
The theoretical yield of HNO₃ can be found by using stoichiometry. This process involves using the molar ratios from the balanced chemical equation 3NO₂(g) + H₂O(l) → 2HNO₃(aq) + NO(g) to convert between reactants and products. The mass of NO₂ given is necessary to calculate the theoretical yield; without it, we cannot proceed.
Once the mass of NO₂ is known, it needs to be converted to moles by using the molar mass of NO₂. Then, using the stoichiometric ratio from the balanced equation (2 moles of HNO₃ for every 3 moles of NO₂), the moles of HNO₃ are calculated. The final step is to convert the moles of HNO₃ to grams by multiplying by its molar mass.