Practice Quiz

MCAS Chemistry Exam Practice

Category - Chemistry

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A hiker carries drinking water in a cloth-covered, metal container called a canteen. During the summer, the hiker wets the cloth covering so that the water in the canteen stays cool. Which of the following statements explains why a wet covering keeps the water cool?
  1. A wet covering transfers coolness to the water in the canteen.
  2. A wet covering insulates the canteen better than a dry covering.
  3. Evaporation of water from the covering transfers heat away from the canteen.
  4. Condensation of water from the covering transfers heat away from the canteen.
Explanation
Answer: C - Evaporation of water from the covering transfers heat away from the canteen.
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