If the Molar Concentration of Sodium Sulfate (Na₂SO₄) Is 0

question 129

Multiple Choice

If the molar concentration of sodium sulfate (Na₂SO₄) is 0.10 M, what is the concentration of sodium ion?

• A)0.10 M
• B)0.050 M
• C)0.20 M
• D)0.30 M
• E)0.40 M

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Definitions:

Hypnagogic Sensations

Experiences occurring at the onset of sleep, including visual, auditory, or physical sensations that can seem vividly real.

Alpha Wave

A type of brainwave detected by an EEG that occurs when a person is relaxed, but alert, typically with closed eyes.

Sleep-Inducing Hormone

Melatonin, a hormone produced by the pineal gland that regulates sleep and wakefulness.

Melatonin

A chemical substance secreted by the pineal gland in reaction to lack of light, which controls the rhythm of sleeping and waking.