When the pH of a solution changes from a pH of 5 to a pH of 2, the hydronium ion concentration is?
(1) 0.001 of the original content
(2) 0.1 of the original content
(3) 10 times the original content
(4) 1000 times the original content

introduction of a drug directly into the respiratory tract is a form of inhalation administration.

chemical properties are the characteristic of matter which can only be observed by changing the chemical identity of a sample like flammability reactivity and toxicity.

a is the correct answer

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