For the First-Order Reaction Below,the Initial Concentration of a Is $\mathrm{A} \rightarrow \mathrm{B}$

question 2

Multiple Choice

For the first-order reaction below,the initial concentration of A is 0.240 M.If the concentration of A decreases to 0.0800 M after 21.8 hours,what is the half-life of the reaction? $\mathrm{A} \rightarrow \mathrm{B}$$\quad$$\quad$$\quad$$\quad$$\quad$ rate $=k[\mathrm{~A}]$

• A) 0.0504 hrs
• B) 1.28 hrs
• C) 7.26 hrs
• D) 10.4 hrs
• E) 13.8 hrs

---

Definitions:

Occipital Lobe

The region of the brain located at the back of the head that is responsible for processing visual information.

Visual Processing

The interpretation of information received by the eyes to understand and interact with the environment.

Cortex

The outer layer of an organ or body structure, especially the cerebral cortex of the brain, which is involved in high-level functions such as consciousness, thought, and memory.

Blind Spot

A specific point in a person's field of vision where they are unable to see, due to the optic disc's location on the retina.