The Radiochemist, Will I

question 35

Multiple Choice

The radiochemist, Will I. Glow, studied thorium-232 and found that 2.82 × 10^-7 moles emitted 8.42 × 10⁶ α particles in one year. What is the decay constant for thorium-232?

• A) 3.35 × 10^-14 yr^-1
• B) 4.96 × 10^-11 yr^-1
• C) 1.40 × 10¹⁰ yr^-1
• D) 2.99 × 10¹³ yr^-1
• E) None of the answers is correct.

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