What is the volume of nitrogen oxide 4 valence mass 460 g?

Given:
m (NO2) = 460 g
Vm = 22.4 l / mol

To find:
V (NO2) -?

Decision:
1) Using the periodic system of D.I.Mendeleev, calculate the molar mass of NO2, which will be numerically equal to the relative molecular mass:
M (NO2) = Mr (NO2) = Ar (N) + Ar (O) * 2 = 14 + 16 * 2 = 46 g / mol;
2) Calculate the amount of substance NO2:
n (NO2) = m (NO2) / M (NO2) = 460/46 = 10 mol;
3) Calculate the volume of NO2 (under normal conditions):
V (NO2) = n (NO2) * Vm = 10 * 22.4 = 224 HP

Answer: The volume of NO2 is 224 liters.