Calculate the Energy in the Form of Heat (In KJ)required

question 23

Multiple Choice

Calculate the energy in the form of heat (in kJ) required to convert 325 grams of liquid water at 20.0 °C to steam at 115 °C.Assume that no energy in the form of heat is transferred to the environment.(Heat of fusion = 333 J/g; heat of vaporization = 2256 J/g; specific heat capacities: liquid water = 4.184 J/g⋅K,steam = 1.92 J/g⋅K)

• A) 129 kJ
• B) 121 kJ
• C) 851 kJ
• D) 914 kJ
• E) 735 kJ

---

Definitions:

PTH

Parathyroid hormone, a regulator of calcium levels in the blood, produced by the parathyroid glands.

Insulin

A pancreatic hormone responsible for managing glucose levels in the blood by aiding its absorption into body tissues.

ADH

Antidiuretic Hormone, a hormone secreted by the pituitary gland that regulates the balance of water in the body by reducing the amount of water excreted in the urine.

Addison Disease

A disorder characterized by insufficient production of cortisol and sometimes aldosterone by the adrenal glands, leading to fatigue, muscle weakness, and other symptoms.