How Much Heat Is Released When 105 G of Steam

question 105

Multiple Choice

How much heat is released when 105 g of steam at 100.0 °C is cooled to ice at -15.0 °C? The enthalpy of vaporization of water is 40.67 kJ mol^-1, the enthalpy of fusion for water is 6.01 kJ mol^-1, the molar heat capacity of liquid water is 75.4 J mol^-1 °C^-1, and the molar heat capacity of ice is 36.4 J mol^-1 °C^-1.

• A) 54.8 kJ
• B) 273 kJ
• C) 319 kJ
• D) 347 kJ

---

Definitions:

CPAP

Continuous Positive Airway Pressure, a treatment method for sleep apnea that uses mild air pressure to keep the airways open.

Trazodone

A medication primarily used to treat depression, also having applications in treating anxiety, insomnia and controlling certain types of chronic pain.

Urinate

The process of expelling urine from the bladder through the urethra to the outside of the body.

Hot Chocolate

A warm beverage made from milk or water, cocoa powder, and sugar, often enjoyed as a comfort drink.