Which of the Following Is the Best Explanation for How

question 73

Multiple Choice

Which of the following is the best explanation for how a water softener works?

• A)When hard water passes over a resin in the softener,the Ca²⁺ and Mg²⁺ ions in the water bind to the resin in place of Na⁺ ions.
• B)The softener releases an acid to interact with the Ca²⁺ and Mg²⁺ ions in the hard water to neutralize them.
• C)When hard water passes through the softener,the Ca²⁺ and Mg²⁺ ions are removed through electrolysis.
• D)The softener releases K⁺ ions to counteract the Ca²⁺ and Mg²⁺ ions in the hard water.
• E)When hard water passes through the softener,the Ca²⁺ and Mg²⁺ ions precipitate out as Mg(OH)₂ and Ca(OH)₂.

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Definitions:

Photoreceptors

are specialized cells in organisms that respond to light, allowing for vision and light-guided behaviors.

Mechanoreceptors

Sensory receptors that respond to mechanical pressure or distortion, involved in detecting touch, pressure, and sound.

Retinal Disorders

Retinal disorders are a group of diseases affecting the retina, a layer of tissue at the back of the eye, which can impair vision and lead to blindness.

Exteroceptors

Sensory receptors that receive stimuli from the external environment, involved in senses such as sight, hearing, taste, smell, and touch.