Why does a sample of boiling water remain at the same temperature until all the water has been boiled? Why is slow distillation better than fast distillation? What are the two methods used for testing water in chemical compounds? The distilling flask should never be boiled to dryness. Why...
Why does a sample of boiling water remain at the same temperature until all the water has been boiled? Explain why all of a pure solution does not vaporize at once when the boiling point is reached. When we graph the data that we would get from simple a...
Standard boiling point of water is View Solution High boiling point of water is due to : View Solution Knowledge Check The boiling point of heavy water is A108∘C B101.4∘C C99∘C D110∘CSubmit Sodium chloride is ... Astrong electrolyte Bweak electrolyte Cnon-electrolyte DNone of th...
7 Which statement explains why methane has a lower boiling point than water? B A Methane has weaker covalent bonds than water. B Methane has weaker attractive forces than water. C Methane molecules are heavier than water molecules. D Methane molecules have more bonds than water molecules. 相关...
Laozi asked Confucius: “Why don't you learn from the noble virtue of water?” Confucius said, “What virtue does water have?” Laozi said, “Nothing else in the world has the supreme goodness of water. Water is the source of life, nou...
When NaCl (or any other non-volatile solute) is dissolved in water, vapour pressure of water decreases (because some of the solvent molecules on the surface and replaced by the molecules of the solute which are non-volatile). The solution has to be heate
As air pressure decreases, water molecules require less energy to escape (that is why water has a reduced boiling point at higher elevations). As water temperature increases, average molecular motion will increase, and more molecules will escape to the atmosphere. As relative humidity of the air...
boiling of water, as it’s an integral part of cooking. You put water in a container, keep it on the stove, and cover it (for maximum utilization of heat energy). However, when the water starts to make noise and the cover begins to tremble, you know that the water has successfully ...
The JING team, who serve as tea consultants to high-profile chefs such as Heston Blumenthal and Thomas Keller, also meticulously developed a failsafe process for creating the perfect inflight cuppa on every journey. Archer says that the lower boiling point of water on planes meant that the team...
However, adding less water can help determine how fast your water will come to a boil—hopefully not boiling over. You can always add more water once the pot reaches its boiling point, so keep this in mind. Salt the Water If you are cooking pasta, salt your water before adding ...