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A solution is prepared by dissolving 7.00 g of glycerin ( C3H8O3) in 201 g of ethanol The freezing point of the solution is ________ °C.The freezing point of pure ethanol is
.The molal freezing point depression constant (
) for ethanol is
The molar masses of glycerin and of ethanol are 92.1 g mol-1 and 46.1 g mol-1,respectively.
Night Terrors
Episodes of intense fear that occur during deep (non-REM) sleep, typically in children, characterized by screaming, sweating, confusion, and a heightened heart rate, without memory of the event upon waking.
Restorative Function
A theory proposing that sleep serves to repair and rejuvenate the body and mind, restoring physiological and psychological functions.
Consciousness
The state of being aware of and able to think about one's own existence, sensations, thoughts, surroundings, and experiences.
Non-REM
Describes a type of sleep that is divided into stages, excluding the REM (Rapid Eye Movement) phase, characterized by deeper physical and mental rest.
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