Answer is: 3,3 mol of <span>nitrous oxide gas is produced in this chemical reaction. </span>Chemical reaction: N₂ + O₂ → 2NO. n(N₂) = 1,65 mol. n(NO) = ? from reaction n(N₂) : n(NO) = 1 : 2. 1,65 mol : n(NO) = 1 : 2. n(NO) = 3,3 mol. n - amount of substance.
C is wrong, the real answer is B: to add tartness, and the reason why is because citric acid comes from jam, jellies, and more! And that is why the answer B is the correct answer.
Hope this helped!
Nate
(P.S. if you buy jams and real the ingredients, it will say "citric acid." :))