A 10 Liter Solution Contains 0

question 35

Multiple Choice

A 1.0 liter solution contains 0.25 M hydrogen fluoride (HF) and 0.38 M sodium fluoride (NaF) .What is the pH of this solution? (K_a for HF is 7.2 × 10^-4)

• A) 3.14
• B) 3.32
• C) 2.96
• D) 0.18
• E) 10.68

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Definitions:

Major Histocompatibility Complexes

A set of cell surface proteins important for the immune system to recognize foreign molecules, playing a critical role in antigen presentation.

T-cell Receptors

Molecules found on the surface of T-cells that are responsible for recognizing fragments of antigen as peptides bound to major histocompatibility complex (MHC) molecules.

Foreign Antigens

Substances that are recognized by the immune system as non-self, triggering an immune response.

Self-antigens

Antigens present on the body's own cells; usually tolerated by the immune system.