When 100 G KOH Is Dissolved in 100 $\circ$ C to 47

question 22

Multiple Choice

When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter,the temperature rises from 25.18 ^$\circ$ C to 47.53 ^$\circ$ C.What is the enthalpy change per gram of KOH dissolved in the water? Assume that the solution has a specific heat capacity of 4.18 J/g.K.

• A) -116 J/g
• B) -934 J/g
• C) -1.03 \(\times\) 10³ J/g
• D) -2.19 \(\times\) 10³ J/g
• E) -1.03 \(\times\) 10⁴ J/g

---

Definitions:

Psychologists

Professionals in the field of psychology who study mental processes and behavior, offering therapeutic services to individuals and groups.

Problem-Focused Coping

A strategy for managing stress by directly tackling the problem that causes stress, rather than merely alleviating its symptoms.

Study Schedule

An organized plan that outlines specific times and strategies for studying, designed to enhance learning and retention of information.

Problem-Focused Coping

A strategy involving tackling a stressful situation directly to alleviate stress or eliminate its cause.