A student had a glass of water at 25°C. He put some ice in it. Once the ice melted, he found that the water's temperature had decreased to 18°C.The student puts the same amount of water at 25°C into another glass. He then adds more ice to this glass than he had added to the first glass. Which statement correctly explains what will happen after the ice melts? A. The water will be colder than 18°C because more thermal energy would have been added to it. B. The water will be warmer than 18°C because it would have received more heat from the ice. C. The water will be warmer than 18°C because melting would have taken place for a longer time. D. The water will be colder than 18°C because more heat would have flowed from it to the ice.
Question
A student had a glass of water at 25°C. He put some ice in it. Once the ice melted, he found that the water's temperature had decreased to 18°C.The student puts the same amount of water at 25°C into another glass. He then adds more ice to this glass than he had added to the first glass. Which statement correctly explains what will happen after the ice melts? A. The water will be colder than 18°C because more thermal energy would have been added to it. B. The water will be warmer than 18°C because it would have received more heat from the ice. C. The water will be warmer than 18°C because melting would have taken place for a longer time. D. The water will be colder than 18°C because more heat would have flowed from it to the ice.
Solution 1
The correct answer is D. The water will be colder than 18°C because more heat would have flowed from it to the ice. This is because the ice absorbs heat from the water to melt, which lowers the temperature of the water. The more ice you add, the more heat is absorbed from the water, and the colder the water becomes.
Solution 2
No answer
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