A 0050 M Solution of the Weak Acid HA Has [H₃O⁺]

question 78

Multiple Choice

A 0.050 M solution of the weak acid HA has [H₃O⁺] = 3.77 * 10¯⁴ M. What is the K_a for the acid?

• A) 7.5 * 10¯³ M
• B) 2.8 *10¯⁶ M
• C) 7.0 * 10¯⁷ M
• D) 7.0 * 10¯⁸ M
• E) 2.6 *10¯¹¹ M

Understand the process of drawing a graph to represent experimental data correctly, including the placement of variables.

Differentiate between independent and dependent variables in scientific experiments.

Comprehend how to analyze and organize scientific data, including the use of tables, graphs, or drawings.

Identify components and characteristics of the scientific method that are not directly part of experimental procedures.

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Definitions:

Repressible System

A regulatory system in which the presence of a specific molecule inhibits gene expression.

Prader-Willi Syndrome

A rare genetic disorder characterized by a variety of symptoms including reduced muscle tone, feeding difficulties in infancy, overeating in later childhood, and intellectual impairment.

Angelman Syndrome

A genetic disorder causing developmental delays and neurological problems, often characterized by smiles, laughter, and an excitable demeanor.

Epigenetic Inheritance

Inheritance that involves changes in how a gene is expressed without any change in that gene’s nucleotide sequence.