Why do gas molecules enter liquids? Do they enter solids? Why are the gases in the thermosphere stratified? Why do terrestrial planets have meager atmospheres? Why are heavy metals toxic? Why are transition metals less reactive? Why are hydrocarbons extremely flammable?
Which one is not one of the properties of water? (a) the frozen form is more dense than the liquid form (b) the frozen form is less dense than the liquid form (c) water is a solvent (d) water has a high heat capacity (e) water has a high heat of evaporati ...
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Likewise, cold air is denser than hot. air. The greater weigh! of !he denser material makes it fall to the bottom of the container. It pushes up the less dense material.Another word for "fluids" would be___. A.solidsB.gasesC.densitiesD.liquids 相关知识点: 试题来源: 解析 D 第二...
A simple example of convection currents iswarm airrising toward the ceiling or attic of a house. Warm air is less dense than cool air, so it rises. Windis an example of a convection current. Sunlight or reflected light radiates heat, setting up a temperature difference that causes air to ...
由第三段最后一句话will be 30 percent cheaper than a cab排除Α项;文中没有提及目前该软件是不是受人们的欢迎,排除Β项;由最后一段可知该软件目前只是在晚上高峰期使用,以后会24小时使用,排除D项。 60@C 推理判断题。由文章最后一段的these types of next generation, more efficient的信息可以推断出这样的...
Trade volumes decline due to pandemic The global trade movements of relevance to us – air and ocean freight sent in containers, excluding liquids and bulk goods – declined by 2.8 % in the year under review (previous year: +0.6 %). The decrease was less than expected given the...
The phenomenon was first formally observed 1797 by the physicist Giovanni Battista Venturi, who saw that fluids, both liquids and gases, gain velocity when flowing through a chokepoint. Jab a spigot at the bottom of a barrel and the wine inside will rush out with force. Put a doorwa...
The fundamental similarity of liquids and gases becomes clearly apparent when the temperature and pressure are 17 somewhat. Suppose a closed container 18 filled with a liquid is heated. The liquid expands, or in other words becomes less dense; some of it evaporates. In contrast, the vapor above...
How are solids, liquids and gases alike? What is crystal lattice? Is salt an amorphous solid? Which is denser, ice at 0 degrees C or water at 4 degrees C? What intermolecular force is responsible for the fact that ice is less dense than liquid water?