GKFix MCQ Question

What is the total mass of neutrons in 7 mg of ¹⁴C?

• A. 4.035 × 10⁻⁵ kg
• B. 1.675 × 10⁻²⁷ kg
• C. 2.4088 × 10²¹ kg
• D. 6.022 × 10²³ kg