What Is the Enthalpy Change (In KJ)of a Chemical Reaction

question 42

Multiple Choice

What is the enthalpy change (in kJ) of a chemical reaction that raises the temperature of 250.0 ml of solution having a density of 1.25 g/ml by 7.80°C? (The specific heat of the solution is 3.74 j/g ∙ K. )

• A)-7.43 kJ
• B)-12.51 kJ
• C)8.20 kJ
• D)-9.12 kJ
• E)6.51 kJ

---

Definitions:

Society Shapes

The concept that societal structures and cultural norms influence individual behaviors, perceptions, and social identities.

Psychic Energy

A concept in psychology representing the force behind human thoughts, emotions, and behaviors, often linked to Freudian psychoanalytic theory.

Biological Drives

Innate impulses that motivate behavior and are essential for survival, such as hunger, thirst, and the drive for reproduction.

Id

In psychoanalytic theory, the part of the mind in which innate instinctive impulses and primary processes are manifest.