How Much Heat Is Released When 105 G of Steam

question 57

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,the enthalpy of fusion for water is 6.01 kJ/mol,the molar heat capacity of liquid water is 75.4 J/(mol ∙ °C) ,and the molar heat capacity of ice is 36.4 J/(mol ∙ °C) .

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

---

Definitions:

Titin

A large protein found in muscle tissue that plays a role in the elasticity and contraction of muscle.

Isometric Contraction

A type of muscle contraction in which the muscle generates force without changing its length, maintaining a constant length of the muscle.

Isotonic Contraction

A type of muscle contraction in which the muscle changes length while the tension remains constant, enabling movement.

Muscle Fibers

The elongated, narrow cells composing muscles, which can contract to facilitate movement.