Answer:
The number of moles of water that can be made when 177.3 grams of HNO3 are consumed is 11.0.
This can be calculated using the following equation:
177.3 g HNO3 x (1 mol HNO3 / 63 g HNO3) x (2 mol H₂O / 6 mol HNO3) x (18 g H₂O / 1 mol H₂O) = 11.0 g H₂O