What Is the Hydronium-Ion Concentration in a Solution Formed by Combining

question 46

Multiple Choice

What is the hydronium-ion concentration in a solution formed by combining 750 mL of 0.10 M NaOH with 250 mL of 0.30 M HCl? NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l)

• A) 0.075 M
• B) 1.7 × 10^-13 M
• C) 1.0 × 10^-7 M
• D) 0.30 M
• E) 0.10 M

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Definitions:

Myelinated Axon

A nerve fiber enveloped in a myelin sheath, which increases the speed and efficiency of electrical signal transmission.

Ion Channels

Protein structures embedded in cell membranes that allow ions to enter or leave a cell, critical for various biological processes including nerve impulse transmission and muscle contraction.

Myelin Sheath

The fatty layer that surrounds and insulates nerve fibers in the central and peripheral nervous systems, facilitating the rapid transmission of nerve impulses.

Ion Pump

A protein complex in cell membranes that uses energy to move ions across the membrane, crucial for maintaining cellular ion balance.