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At standard atmospheric pressure, the boiling point of liquid oxygen is -183°C, the boiling point of liquid nitrogen is -196°C, and the boiling point of liquid helium is -268.9°C.
The minimum separation must be that helium is assumed to have cooled to -270 degrees, heated to -260 degrees, and that helium has boiled into a gas, while oxygen and nitrogen are still in the liquid state, and nitrogen is rising out, and finally O2
It takes longer to heat salt water to boil than water, indicating that salt water absorbs more heat than water. (Brine has a higher boiling point than water Our teacher said that time is to fill more, but I do not know why, I think should be less ah! Because less than less water will be slower ah! Urgent! Urgent! Urgent! The boiling time of the salt water was longer than that of the water, indicating that the salt water absorbed more heat than the water. Why? Brine has a higher boiling point than water When our teacher said it, he said it was too much, but I don't know why, I think it should be too little! Because it would be slower than water if it was less! Urgent! Urgent! Urgent!
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RELATED INFORMATIONS
- 1. At this time, the boiling point of water is 100°C. When the water in the beaker is boiling, it will continue to be heated. Can the water in the test tube reach 100°C? Can it boil? Why? If the test tube is filled with alcohol, can the alcohol in the test tube boil? Why?
- 2. To make water boil at 90°C, the method is () because the boiling point of liquid is lower at () and higher at ()
- 3. The following table shows the melting point and boiling point of several substances at standard atmospheric pressure. According to the data in the table, the following statements are correct:() The following table shows the melting point and boiling point of several substances under standard atmospheric pressure. According to the data in the table, the following statements are correct: () Melting point of lead:328°C; boiling point:1740°C Melting point of mercury:-38.8°C; boiling point:357°C Melting point of alcohol:-117°C; boiling point:78°C Melting point of toluene:-95°C; boiling point:111°C A. Lead in solid-liquid coexistence at 350°C B. Solid alcohol and toluene are not crystals C. Mercury thermometer can not be used to measure temperature in Huzhou area D. Boiling water temperature can not be measured by alcohol thermometer in Lake State area Why,
- 4. Boiling and melting points of iodine at standard atmospheric pressure
- 5. How does the boiling point of water change with altitude?
- 6. How many degrees does the boiling point of water drop? How many degrees does the boiling point of water drop when the altitude rises 1000 meters?
- 7. How to lower the boiling point of water
- 8. Should we increase or decrease the pressure to lower the boiling point of water?
- 9. How does the boiling point of water change if a small amount of NaCl solid is added to the water under atmospheric pressure There is still a paragraph on the subject The process of water changing from liquid to gas can be expressed by the following formula: H2O (l)=H2O (g) In this case, for example, the vaporization of H2O is endothermic, so the temperature rise balance moves in the direction of generating more H2O (g How does the boiling point of water change if a small amount of NaCl solid is added to the water under atmospheric pressure There is still a paragraph on the subject The process of water changing from liquid to gas can be expressed by the following formula: H2O (l)=H2O (g) In this case, for example, the vaporization of H2O is endothermic, so the temperature rise equilibrium moves in the direction in which more H2O (g) is generated
- 10. Why is the boiling point of brine higher than water?
- 11. The temperature at which the liquid boils is called the boiling point. What does it have to do with the level?
- 12. The temperature at which a liquid boils is called the boiling point. The boiling point of a liquid is related to ().() The boiling point increases and () the boiling point decreases
- 13. When the boiling point of water greater than or less than a standard atmospheric pressure is lower than a standard atmospheric pressure
- 14. How to make the boiling point of water reach 100°C without standard atmospheric pressure Specific material steps except pressure cooker
- 15. Since the boiling point of water is 98 degrees Celsius, the atmospheric pressure () standard atmospheric pressure can be determined (Fill above, equal to or below)
- 16. At 1 standard atmospheric pressure, the boiling points of alcohol and water are 78°C and 100°C, respectively. Place them in two tubes and place them in boiling water under constant heating. Then, the boiling point of the two tubes is ______. At 1 standard atmospheric pressure, the boiling points of alcohol and water are 78°C and 100°C, respectively. Place them in two tubes and place them in boiling water under constant heating. Then, the boiling point in these two tubes is ______.
- 17. Can the temperature of the liquid exceed the boiling point at standard atmospheric pressure? Doesn't the boiling point of the liquid change? Is it possible? What is a state if exceeded? It's when the air pressure does n' t change that it seems to be related to the critical temperature. For example, water can reach 138 degrees Celsius and alcohol can reach 30 degrees Celsius. Can the temperature of the liquid exceed the boiling point at standard atmospheric pressure? Doesn't the boiling point of the liquid change? More than possible? What is a state if exceeded? It's when the air pressure does n' t change that it seems to be related to the critical temperature. For example, water can reach 138 degrees Celsius and alcohol can reach 30 degrees Celsius.
- 18. Why is the boiling point of water less than a standard atmospheric pressure? The boiling point of water is 100 degrees, but now it's 97 degrees.
- 19. Does water have a boiling point of 100 degrees Celsius at a standard atmospheric pressure? It's best to justify! Does water have a boiling point of 100 degrees Celsius at a standard atmospheric pressure? It's reasons!
- 20. The ionic equation for the reaction of SO2 with NaClO solution is SO2+ClO-+2OH-=SO42-+Cl-+H2O Or SO2+ClO-+H2O=SO42-+Cl-+2H2+, is NaClO alkaline?