What is the [H₃O⁺] (hydronium concentration) of an aqueous solution that has a pH of 4.00?

0.0001M

Explanation:

Given that:

[H₃O⁺] (hydronium concentration) = ?

pH of aqueous solution = 4.00

pH is the negative logarithm of hydrogen ion [H+] or hydroxonium ion [H₃O⁺] in a solution. Mathematically it is expressed as:

pH = -log[H₃O⁺]

4.00 = -log[H₃O⁺]

[H₃O⁺] = Antilog (-4.00)

[H₃O⁺] = 0.0001M

Thus, 0.0001M is the [H₃O⁺] (hydronium concentration) of an aqueous solution that has a pH of 4.00

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the correct answer is a. the ability of electrons to flow throughout the metal.

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