GKFix MCQ Question

What is the number of moles in 1.00×10⁻³ kg of oxygen (M = 32 u)?

• A. 2.85 × 10⁻² mol
• B. 3.125 × 10⁻² mol
• C. 3.45 × 10⁻² mol
• D. 3.78 × 10⁻² mol