10618 G of an Unknown Salt Is Dissolved in a Coffee

question 2

Multiple Choice

10.618 g of an unknown salt is dissolved in a coffee cup calorimeter that contains 50.0 mL of water.The measured temperature decreased from 23.8 °C to 22.7 °C.Identify the unknown salt.The specific heat of water is 4.184 J g^-1 °C^-1,and assume the density of the solution is 1.00 g mL^-1.

• A)NaF, \(D _ { \mathrm { r } }\) H = 0.91 kJ mol^-1
• B)NaBr, \(D _ { \mathrm { r } }\) H = -0.60 kJ mol^-1
• C)NaNO₃, \(D _ { \mathrm { r } }\) H = 20.50 kJ mol^-1
• D)LiNO₃, \(D _ { \mathrm { r } }\) H = -2.51 kJ mol^-1
• E)LiBr?2H₂O, \(D _ { \mathrm { r } }\) H = -23.26 kJ mol^-1

---

Definitions:

Style Of Life

Adlerian psychology term for an individual's unique way of achieving superiority, personal goals, and handling of life's tasks.

Epigenetic Principle

A theory suggesting that development proceeds through a predetermined unfolding of personalities, influenced by genetic factors and environmental conditions.

Creative Power

The ability or capacity to generate original ideas, solutions, or artistic expressions.

Defective Body Parts

Refers to organs or components of the body that are not functioning optimally or are malformed, impacting an individual's health or abilities.