initially hot, cooled water at the bottom is denser than the hot water at the top, so no convection will occur and the bottom part will start freezing while the top is still warm. This effect, combined with the evaporation effect, may makehot water freeze faster than cold waterin some ...
A. Water absorbs cold. B. Water releases heat. C. Water absorbs heat. D. Water is not affected by heat. 相关知识点: 试题来源: 解析 C。水煮沸变成蒸汽是因为水吸收了热量。A 选项水吸收冷错误;B 选项水释放热量不是变成蒸汽的原因;D 选项水不受热量影响错误,所以选 C。反馈...
When we boil any liquid, for example, if we are boiling water then hot water comes at the surface of the container and the cold water remains in the bottom. Why? As the molecular complexity of the homologs increases a) the boiling p...
Explain why a hurricane thrives over warm water but dissipates over cold water. Describe why sugar will dissolve faster in hot tea than it will in cold tea. Be specific in your explanation. Why does saltwater freeze, but salt is used to melt ice? Why does refr...
How can I make gelatin set faster? To make Jello set faster, you need to: Dissolve the gelatin mix in 3/4 cup boiling water. Add ice to 1/2 cup cold water to make 1 1/4 cups. Stir the cold water into the gelatin until it's slightly thickened. ...
Because the climate of the Great Plains is arid, water in the aquifer is being used faster than it can be recharged. That's why some scientists refer to using fossil water aquifers as water mining. Groundwater may also exist on other planets. Images from the Mars Global Surveyor spacecraft...
5. A minus sign in the read-out lets you know that the internal temperature of the food hasn't reached 90°F. yet. Since the water for your soup came from the cold water tap, it'll be less than 90°. 2. Place food with rxobe into oven. 3. Insert cable end into receptde on...
How the canned food, whether it is preserved at home or in a factory, is stored, will most likely have a vast impact on its shelf life. Canned food that is stored in a cool and dry place will almost always last a lot longer than canned food stored in a warm place that is exposed...
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Why does cold metal conduct electricity better than warm metal? Why does MgO have a higher melting point than CaS? Why does water boil at a higher temperature than butter, which is non-polar? Why do covalent compounds not conduct electricity?