A Reaction Was Experimentally Determined to Follow the Rate Law

question 72

Multiple Choice

A reaction was experimentally determined to follow the rate law, Rate = k[A]² where k = 0.456 s^-1M^-1. Starting with [A]_o = 0.500 M, how many seconds will it take for [A]_t = 0.250 M

• A) 2.85 x 10^-2 s
• B) 1.14 x 10^-1 s
• C) 1.52 s
• D) 4.39 s
• E) 5.48x10^-1 s

---

Definitions:

White Blood Cell

Cells in the blood that are part of the immune system, helping to fight off infections.

Urinalysis

A laboratory test that analyzes urine for a variety of disorders, such as infections, kidney disease, and diabetes.

Nitrites

Chemical compounds that can be used as food preservatives or may form in the body from nitrates, with various health implications.

Surgical Asepsis

A method used to prevent contamination of wounds and other susceptible sites by ensuring an environment that is free from all microorganisms.