Nitric acid is manufactured in the Oswald process, which involves the catalytic oxidation of ammonia according to the following equations: (i) 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g)
(ii) 2 NO(g) + O2(g) → 2 NO2(g)
(iii) 3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g)

Requird:
How many gallons of 70.0% (by mass) of concentrated HNO3 solution (density = 1.48 g/mL) can be produced from 1.00 metric tonne (1.00 x 10^3 kg) of ammonia gas?