Hydrochloric Acid Is Widely Used as a Laboratory Reagent in Refining

question 23

Multiple Choice

Hydrochloric acid is widely used as a laboratory reagent in refining ore for the production of tin and tantalum, and as a catalyst in organic reactions. Calculate the number of moles of HCl in 62.85 mL of 0.453 M hydrochloric acid.

• A)28.5 mol
• B)1.04 mol
• C)0.139 mol
• D)0.0285 mol
• E)0.00721 mol

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Definitions:

Avolition

A lack of motivation or ability to initiate and persist in goal-directed behaviors, often seen in psychiatric disorders such as schizophrenia.

Tactile Hallucination

The false perception of physical touch or sensation on the skin without any physical cause.

Somatic Hallucination

False perceptions or sensations in the body that have no physical source, such as feeling insects crawling on the skin.

Auditory Hallucination

An experience involving hearing sounds, usually voices, that are not present in external reality.