3. Does sugar dissolve more easily in hot water or cold water?
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Ответ:
hot.
Explanation:
The reason that sugar dissolves more quickly in hot water than in cold water has to do with the kinetic energy of the particles. The faster (hotter) the water molecules are moving, the more energy they give to the sugar molecules when they collide with them. Think about it this way: a sugar crystal is just a lot of sugar molecules stuck together.
Ответ:
methane, ethane, propane and butane are the alkanes that are gases at room temperature. all four of these alkanes have four or fewer carbon atoms. alkanes with more carbon content are liquid or solid at room temperature. hexane and octane are examples of alkanes that are liquid at room temperature.