What is the approximate mass of an oxygen molecule,O₂,if the atomic mass of oxygen is 15.9994 u?

Question

Quizplus · Accepted Answer

The mass of an oxygen molecule, O₂, is twice the atomic mass of oxygen. Therefore, the mass of an oxygen molecule is:
2 × 15.9994 u = 31.9988 u
We can convert this mass to kilograms using the factor:
1 u = 1.661 × 10⁻²⁷ kg
Therefore, the mass of an oxygen molecule in kilograms is:
31.9988 u × 1.661 × 10⁻²⁷ kg/u = 5.313 × 10⁻²⁶ kg 
Therefore, the answer is B.

What Is the Approximate Mass of an Oxygen Molecule,O₂,if the Atomic