1.During oxidation of 112l (n. o.s.) of ammonia with oxygen on platinum catalyst nitrogen oxide (III) was obtained in 80% yield of the product. Determine the mass of the resulting product in grams:a)60; c)90; c)120; e)180; f)200; 2. What volume (n. o.s.) of 98% sulfuric acid solution with a density of 1.84g/ml must be taken to prepare 1,044ml of 12% sulfuric acid solution with a density of 1.08g/ml:a)75ml; c)80ml; c)85ml; e)90ml; f)100ml;

3) What volume (in ml) of a solution with a mass fraction of sulfuric acid of 0.8 and a density of 1.78 g/ml must be taken to prepare 275 ml of a 12% solution of this acid with a density of 1.08 g/ml? (a) 21 ml; (c) 22 ml; (d) 23 ml; (e) 24 ml; (f) 25 ml;