Calculate the mass of the O2 molecule.

By Ritesh|Updated : November 11th, 2022

The mass of the O2 molecule is 5.32 x 10-23 g. The total mass of all the atoms in a molecule is known as the molecular mass of an element. The atomic masses of each atom in a molecule are added, along with the number of atoms in the molecule, to determine its mass.

Physical Properties of oxygen

  • In its normal state, the gas is tasteless, odorless, and insipid. It has a small paramagnetic field. With the exception of helium, neon, krypton, and argon, it reacts with every element and produces oxides with them. It dissolves somewhat in water.
  • One of the frequently seen forms of oxygen is dioxygen.
  • The most reactive oxygen allotrope that could harm lung tissue is trioxygen. The name of this allotrope is ozone.

Determining the weight of an oxygen molecule

Mass of one oxygen atom = 16g

Therefore,

  • Mass of 1 mole of O2 molecule = 2 x 16 = 32g
  • Number of molecules in 1 mole = 6.022 x 1023
  • Mass of 1 molecule of O2 is = 32/ 6.022 x 1023 = 5.32 x 10-23 g

Hence, the mass of 1 molecule of O2 is 5.32 x 10-23 g

Summary:

Calculate the mass of the O2 molecule.

The mass of the O2 molecule is 5.32 x 10-23 g. Oxygen is used in the production and manufacturing of glass and stone products, and in mining.

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