1. Understand the Concept
* Mole (mol): A unit that represents a specific number of particles (6.022 x 10^23, known as Avogadro's number).
* Molar Mass: The mass of one mole of a substance. It's expressed in grams per mole (g/mol).
2. Find the Molar Mass of Oxygen
* Oxygen exists as a diatomic molecule (O2).
* The atomic mass of one oxygen atom is approximately 16.00 g/mol.
* The molar mass of O2 is 2 * 16.00 g/mol = 32.00 g/mol
3. Calculate the Mass
* Mass = Number of Moles x Molar Mass
* Mass = 1.5 mol x 32.00 g/mol
* Mass = 48.00 g
Therefore, the mass of 1.5 moles of oxygen molecules is 48.00 grams.
