At 20 °C, a 0

question 138

Multiple Choice

At 20 °C, a 0.376 mol L^-1 aqueous solution of ammonium chloride has a density of 1.0045 g mL^-1. What is the mass % of ammonium chloride in the solution? The formula weight of NH₄Cl is 53.50 g mol^-1.

• A)0.381
• B)0.705
• C)0.374
• D)2.68
• E)2.00

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Definitions:

Hypnosis

A trance-like state of focused attention, reduced peripheral awareness, and increased suggestibility.

Partial Deprivation

A condition or situation where an individual or organism is denied part, but not all, of a necessary or desired resource or stimulus.

Selective Sleep Deprivation

A process where specific stages of sleep are intentionally prevented over a period of time, to study the effects of such deprivation on various physiological and psychological functions.

Complete Deprivation

A condition or situation in which an individual or organism is totally deprived of something necessary for its survival or well-being, such as food, social interaction, or sensory input.