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

question 76

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 3.33 °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)-3.89 kJ
• E)6.51 kJ

---

Definitions:

Expected Rate

An anticipated return on investment, interest rate, or growth rate based on historical data, market analysis, or other predictive models.

Probability

This refers to the likelihood of occurrence of an uncertain event, often expressed as a number between 0 and 1.

Narrowest Bell Curve

Describes a distribution with a high peak and steep sides, indicating that the data points cluster closely around the mean, showing low variability.

Large-company Stocks

Equities issued by corporations with a large market capitalization, often considered more stable investments than those of smaller companies.