Calculate the amount of ozone, which is formed from oxygen in the amount of 9 mol. What is the mass of ozone?

Answer: n (O3) = 6 mol, m (O3) = 288 g.
Explanation of the solution to the problem: to solve this problem, you first need to write the equation of the chemical reaction. It looks like this: 3O2 => 2O3.
The reaction shows that oxygen and ozone relate to each other in a ratio of 3: 2, so the amount of ozone substance is n (O3) = 2 * n (O2) / 3, that is, n (O3) = 2 * 9/3 = 6 mol.
The last step is to find the mass of ozone, for this it is necessary to multiply its amount of substance by its molar mass:
m (O3) = n (O3) * M (O3) = 6 * 48 = 288 g.