Explain the following :
1) In which case evaporation of water will be faster (near the sea or far away from sea)
2) Why solids cannot be compressed like gases?
3) Why does ice at 273 K more effective in cooling than water at the same temperature?
Answers
Answer:
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1. Evaporation away from the sea would be more as compared to near the sea.
2. Solids cannot be compressed as compared to gasses because solids don't hve much of intercellular spaces whereas gasses have much of intercellular spaces.
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Answer:
1. Evaporation will be faster far away from the sea. Because the air above the sea may have a lot of water vapours and so the humidity will also be more while far away from the sea the water vapour content would be less and hence evaporation will be faster far away from sea.
2. They are held tightly together by strong forces of attraction. They are held in fixed positions but they do vibrate. Because the particles don't move, solids have a definite shape and volume, and can't flow. Because the particles are already packed closely together, solids can't easily be compressed.
3. water at 273K has already acquired the latent heat of fusion but ice has not yet acquired the same . So it absorbs more heat energy and gives a better cooling effect.
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