Answer:
To determine the mass of 0.2 mole of oxygen atoms, we need to know the molar mass of oxygen. The molar mass of an element represents the mass of one mole of atoms of that element. For oxygen (O), the molar mass is approximately 16.00 grams per mole.
Using this information, we can calculate the mass of 0.2 mole of oxygen atoms:
Mass = Number of moles x Molar mass
Mass = 0.2 mole x 16.00 grams per mole
Therefore, the mass of 0.2 mole of oxygen atoms is 3.2 grams.