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)? (Lice = 3.33 × 10^5 J/kg; cice = 2.09 × 10^3 J/kg/°C)
a. 13
b. 1.5
c. 15
d. 16
e. 33
c
You might also like to view...
Choose the best answer. The Milky Way Galaxy
a. is part of a cluster of a few dozen galaxies. b. is about 200 light-years in diameter. c. is the largest known object in the universe. d. is part of a cluser of a few dozen galaxies, is about 200 ly in diameter, and is the largest known object in the universe e. is part of a cluster of a few dozen galaxies and is the largest known object in the universe
What does the Milky Way look like on the night sky?
A. a spiral-shaped region of nebulosity B. a uniform scattering of stars throughout the sky C. a pale band of light scattered with stars that stretches across the sky D. The Milky Way is not visible from Earth without a telescope.
Comet nuclei contain _____
A) carbon monoxide B) nonvolatile liquids C) molten iron D) sodium chloride
What are the chief types of metamorphic rocks?
What will be an ideal response?