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.

---

Definitions:

Hippocampus

A region of the brain associated with memory formation, learning, and emotions.

Long-Term Memory

The aspect of memory where information is stored for an extended period, ranging from hours to a lifetime.

Messages

In biological systems, messages refer to the information transmitted between cells or organisms, often in the form of chemical signals or nerve impulses.

Acetylcholinesterase

Acetylcholinesterase is an enzyme that breaks down the neurotransmitter acetylcholine in the synaptic cleft, terminating neural transmission.