Mass defect for oxygen-16 = 0.13261 amu How many kilograms does the mass defect represent?

Use the conversion 1 amu = 1.6605 × 10⁻²⁷ kg. Multiply the mass defect by this conversion factor: 0.13261 amu × 1.6605 × 10⁻²⁷ kg/amu ≈ 2.20 × 10⁻²⁸ kg. Therefore, the mass defect represents 2.20 × 10⁻²⁸ kg, choice B.

AI-written and checked against the verified answer.