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a cup of hot water cannot melt a large block of ice. However the same block melts when dropped into a lake. This is because?
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a cup of hot water cannot melt a large block of ice. However the same block melts when dropped into a lake. This is because?

User Rubbal
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This is because the salt in the lake lowers the freezing point. Salt makes a great ice melter, but salt cannot melt ice with just itself.
User Amulya Khare
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