A Certain First Order Reaction Has a Half Life of 20.5

question 19

Multiple Choice

A certain first order reaction has a half life of 20.5 minutes. What is the value of the rate constant in s^-1.

• A) 3.38×10^-2
• B) 5.64×10^-4
• C) 1.47×10^-2
• D) 3.38×10^-4

---

Definitions:

Evidence-based Practice

A decision-making process that integrates the best available research with clinical expertise and patient values.

Therapeutic Process

A structured series of interventions and interactions aimed at improving a person's mental health or addressing psychological issues.

Diagnostic Assessment

An evaluation process to identify the nature and extent of an individual's condition, typically involving a combination of tests and observations.

Ecological Context

The environmental and social factors that influence the interactions and development within an ecosystem.