The PH of a 0

question 72

Multiple Choice

The pH of a 0.25 M aqueous solution of hydrofluoric acid, HF, at 25.0°C is 2.03. What is the value of K_a for HF?

• A)2.0 × 10^-9
• B)1.1 × 10^-9
• C)6.0 × 10^-5
• D)3.5 × 10^-4
• E)none of the above

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Definitions:

Nerve Growth Factor

A protein essential for the growth, maintenance, and survival of certain neurons, playing a key role in the nervous system's development.

Prostaglandins

A collection of biologically active lipid molecules that exhibit a variety of hormone-like actions in animals.

Leptin

is a hormone produced by fat cells that regulates food intake and energy expenditure by signaling satiety to the brain.

Growth Factors

Natural substances capable of stimulating cellular growth, proliferation, healing, and cellular differentiation.