A 100 ML Sample of Water Is Placed in a Coffee

question 37

Multiple Choice

A 100 mL sample of water is placed in a coffee cup calorimeter.When 1.0 g of an ionic solid is added,the temperature decreases from 21.5 °C to 20.8 °C as the solid dissolves.For the dissolving of the solid,_____.

• A) ΔH < 0
• B) ΔS(universe)> 0
• C) ΔS(system)< 0
• D) ΔS(surroundings)> 0
• E) None of these

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Definitions:

Amino Acids

Natural compounds which come together to create proteins, functioning as essential components of living organisms.

Active Transport

The process in which molecules travel through a cell membrane from an area of lesser concentration to an area of greater concentration, necessitating the use of energy.

Small Intestine

The small intestine is part of the digestive system, responsible for absorbing nutrients from food through its lining into the bloodstream.

Cholesterol

A waxy, fat-like substance found in the cells of all animals, essential for the formation of cell membranes, certain hormones, and vitamin D.