A 0210-G Sample of an Acid (Molar Mass = 192 G/mol)

question 1

Multiple Choice

A 0.210-g sample of an acid (molar mass = 192 g/mol) is titrated with 30.5 mL of 0.108 M NaOH to a phenolphthalein endpoint. The formula of the acid is

• A) H₃A.
• B) H₂A.
• C) H₄A.
• D) HA.
• E) not enough information given

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Definitions:

ADHD

Attention-Deficit/Hyperactivity Disorder, a neurodevelopmental disorder characterized by excessive hyperactivity, impulsivity, and/or inattention.

Neurotransmitters

The chemical substances that carry the messages from one neuron to the next in the complex pathways of nervous activity within the brain.

Brain Structure

The physical anatomy and organization of the brain, including its various parts, such as the cortex, cerebellum, and neural pathways.

ADHD

Attention Deficit Hyperactivity Disorder, a neurodevelopmental disorder characterized by difficulties with attention, impulse control, and hyperactivity.