For the Second-Order Reaction Below,the Rate Constant of the Reaction $2 \mathrm{~A} \rightarrow \mathrm{B} \quad\quad\quad\quad\quad \text { rate }=k[\mathrm{~A}]^{2}$

question 5

Multiple Choice

For the second-order reaction below,the rate constant of the reaction is 9.4 × 10^-3 M^-1s^-1.How much time (in seconds) is required to decrease the concentration of A from 2.16 M to 0.40 M? $2 \mathrm{~A} \rightarrow \mathrm{B} \quad\quad\quad\quad\quad \text { rate }=k[\mathrm{~A}]^{2}$

• A) 2.0 × 10¹ s
• B) 7.8 × 10¹ s
• C) 1.8 × 10² s
• D) 1.9 × 10² s
• E) 2.2 × 10² s

---

Definitions:

Discloses Sexual Abuse

The act of revealing or reporting an experience of sexual abuse, often in the context of seeking help, support, or justice.

Counselor

A professional who provides guidance and support to individuals dealing with personal, social, or psychological challenges.

Nature

The phenomena of the physical world collectively, including plants, animals, the landscape, and other features and products of the earth, as opposed to humans or human creations.

Child Maltreatment

Various forms of abuse and neglect that children may suffer at the hands of parents or caregivers.