The molar mass of Earth’s air refers to the average mass of a mole of air molecules in the Earth’s atmosphere. Earth’s air primarily consists of a mixture of gases, with nitrogen (N2) and oxygen (O2) being the most abundant components.
To calculate the molar mass of Earth’s air, you consider the weighted average of the molar masses of these gases, taking into account their respective proportions.
- The molar mass of nitrogen (N2) is approximately 28.0134 g/mol.
- The molar mass of oxygen (O2) is approximately 31.9988 g/mol.
- Earth’s atmosphere also contains trace amounts of other gases, such as argon (Ar), carbon dioxide (CO2), and water vapor (H2O), among others.