One Kilogram of Chilled Water at 32°F (0°C) Is Placed

question 50

Multiple Choice

One kilogram of chilled water at 32°F (0°C) is placed in a freezer which is kept at 0°F (−18°C) . Approximately how much electric energy (in kilocalories) is needed to operate the compressor to cool this water to 0°F if the room temperature is maintained at 75°F (24°C) ? (L_ice = 3.33 × 10⁵ J/kg; c_ice = 2.09 × 10³ J/kg⋅°C)

• A) 13
• B) 1.5
• C) 15
• D) 16
• E) 33

---

Definitions:

Empirical Nature

Characterized by reliance on observation or experience rather than theory or pure logic.

Research Methods

Various strategies, techniques, and tools employed in scientific inquiry to gather, analyze, and interpret data.

Observation

The act of carefully watching and analyzing phenomena or behaviors in order to gather information, often used in research and scientific studies.

Dream

A sequence of thoughts, images, and sensations occurring in a person's mind during sleep.