A 100-ML Sample of Water Is Placed in a Coffee

question 67

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. Which of the following is true for the dissolving of the solid?

• A) (  H < 0)
• B) (  S_sys< 0)
• C) (  S_univ > 0)
• D) (  S_surr > 0)
• E) none of these

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Definitions:

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A physical exam of the female reproductive organs, conducted by a physician to check for signs of disease or other conditions.

Intrauterine Device

A form of long-acting reversible contraception that is inserted into the uterus to prevent pregnancy.

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A state of well-being in which an individual realizes his or her own abilities, can cope with the normal stresses of life, can work productively, and is able to make a contribution to their community.