Calculate the mass of 5 liters of ozone O3.

V (O3) = 5 l.
Let’s determine the mass of ozone, knowing its volume. We write down the solution.
First, we find the amount of ozone substance.
We use the following formula.
n = V / Vm.
Where n is the amount of substance.
V is the volume of the substance.
Vm is the molar volume of the substance, equal to 22.4 L / mol.
n = 5 / 22.4 = 0.223 mol.
Next, we find the mass, for this we use the following formula.
n = m / M.
M (O3) = 16 * 3 = 48 g / mol.
m (O3) = 0.223 mol * 48 g / mol = 10.7 g ozone.
The mass of ozone is 10.7 grams.
Answer: the mass of ozone is 10.7 grams.