-
Boiling point. Boiling is a phenomenon of violent vaporization that occurs simultaneously inside and on the surface of a liquid at a certain temperature.
The temperature at which a liquid boils is known as the boiling point.
The boiling point of different liquids is different, give you the boiling point of several different liquids Celsius (at standard atmospheric pressure).
Liquid iron: 2750 Water: 100 Alcohol: 78 Mercury (mercury): 357 Cooking oil: about 250
The so-called boiling point is the temperature at which different liquid substances boil.
The temperature at which the liquid begins to boil. The boiling point changes with the change of external pressure, and the low pressure is also the low boiling point.
Boiling Point: The temperature at which a liquid boils. When the liquid boils, the saturated vapor pressure in the bubble formed inside it must be equal to the pressure exerted by the outside world, so that the bubble can grow and rise, so the boiling point is the temperature at which the saturated vapor pressure of the liquid is equal to the external pressure.
The boiling point of a liquid is related to the external pressure. When the pressure of the liquid increases, its boiling point increases; When the pressure decreases; The boiling point decreases. For example, the steam pressure in a steam boiler is about a few tens of atmospheres, and the boiling point of water in a boiler can be more than 200.
For another example, when cooking rice in a high mountain, the water is easy to boil, but the rice is not easy to cook. This is due to the fact that the atmospheric pressure decreases with the increase of the terrain, and the boiling point of water also decreases with the increase of altitude. (At an altitude of 1,900 meters, the atmospheric pressure is about 79,800 Pa (600 mm Hg), and the boiling point of water is.)
At the same atmospheric pressure, the boiling point of the liquid is also different. This is because the saturation vapor pressure is related to the type of liquid. At a certain temperature, the saturated vapor pressure of various liquids is also constant.
For example, at 20, the saturated air pressure of ether is Pa (44 cm Hg) lower than the atmospheric pressure, and the temperature rises slightly, so that the saturated vapor pressure of the ether is equal to the atmospheric pressure, and the ether can be boiled by heating it to 35. If the liquid contains impurities, it will also affect the boiling point of the liquid. The boiling point of a liquid containing solute is higher than that of a pure liquid, which is due to the fact that the gravitational force between the liquid molecules increases after the presence of a solute, the liquid is not easy to vaporize, and the saturated vapor pressure is also smaller.
To make the saturation vapor pressure the same as the atmospheric pressure, the boiling point must be raised. Different liquids have different boiling points under the same external pressure. The relationship between the boiling point and the pressure can be derived from the Clausius Clapperon equation.
-
The highest boiling point of water is 100 degrees.
-
Hello, it's possible, since you know that it's **, you have to drill into it without complaining about others! Fortunately, there is no financial software installed!! If you still want to use the phone, it is recommended to restore the factory settings.
-
Hello, Zhonggong Education is at your service.
If you have any questions, please feel free to ask questions from Zhonggong Education Enterprises.
-
Most of China is above 1,000 meters above sea level, and the boiling point of water in those places is below 95 degrees, and it does not reach 100 degrees at all.
-
Of course, it can be heated to 1000 degrees, because as long as it can withstand infinite high pressure, it can be heated to infinite high temperatures, and it is still liquid inside, but once it is released, it will take on a gaseous form. After cooling on its own, it is still in a liquid state and does not change. Just follow one of the following:
The higher the pressure, the higher the boiling point, so as long as the pressure rises indefinitely, the boiling point will rise, and as long as the boiling point is not reached, it will still be in a liquid state.
-
All gases have a "critical temperature".
The critical temperature of water is 374 degrees Celsius, both above 347 degrees Celsius, no matter how much pressure water vapor is added, it cannot become liquid, and in a closed container, the water is heated until the critical temperature, or even exceeded, the phenomenon you see is that the liquid level gradually disappears, and when you note, when described, it is not the liquid level that gradually decreases, but the gas-liquid interface disappears when it is very high.
At critical temperatures, there is no difference between gases and liquids.
As at room temperature, the liquid has surface tension, while at the critical temperature it is not.
You can look it up at the critical temperature and you'll find out.
-
It will be very high temperatures, very high pressures.
If the boiler is theoretically extremely strong and resistant to high pressure, it will be until the water vapor is broken down into oxygen and hydrogen, and then, the high temperature reacts violently, this is a bomb!
Of course, it is impossible for the boiler to be so strong, and after the water vaporizes, the pressure will explode the boiler.
-
When the water is heated to 100 degrees, a large amount of water vapor is formed, and the pressure inside the furnace increases, and the boiling point of the water increases. No matter how many degrees it rises, it is still water vapor, and when it reaches saturation, the water does not turn into steam. The boiler is still water and steam, and when it cools, it turns into water again.
-
Because the critical temperature of water is 374. That is, when above 347, the water is gaseous, and no matter how much pressure is added, the water vapor cannot become liquid. When heating water in an airtight container, at the beginning, there is water below, water vapor above, and as the temperature increases, the water below becomes more and more like water vapor, and the interface between water and water vapor gradually blurs, until the critical temperature, the interface gradually disappears.
The water became water vapor. So at 1000 hours, the inside of the boiler is gaseous. When cooled, contrary to the heating process, it eventually turns into water
-
As long as the water is heated to a maximum of 100 degrees Celsius under standard conditions, it will become water vapor above this temperature. After cooling on its own, it will liquefy into small water droplets, in a liquid state. So don't bother, water is water.
-
As long as the pressure can withstand infinity, the temperature can be infinitely high. However, if the temperature reaches hundreds of millions of degrees, then the water molecules and even the atomic structure will be destroyed, and then it will not be water when it cools down
-
Please give a precise description of this confusion and tell us why:
Mentality: scoring, upgrading, gaining experience, taking wealth value, blindly pursuing "fast", and not being responsible for the questioner;
Reason: I hope to upgrade my score, I want to increase the adoption rate, I want to get my wealth value, I don't care about anything else, and I am not afraid of being despised for talking nonsense;
The characteristics of this type of person, such as education, social status, attitude towards the world, etc.:
It seems that there are no characteristics, there are high and low academic qualifications, high and low status, but the only common point is that they know nothing and do not understand what they say;
Why are they completely free from the moral pressure of "deception" and "false fame":
Because on the Internet, they are all anonymous or use screen names, so the ugly side is exposed.
PS: In the age of the Internet, being able to quickly extract useful information from the massive amount of information is an ability that most people do not have. So the landlord, you don't have to be too serious, feel that some people's answers are unreliable, you can ask, ask him to run away with red faces, or simply don't adopt him and wait for a more quality answer.
This is like people and people, even if you are very good, you will meet people who are not in tune in this life.
Finally, let me tell you a story:
The two people quarreled and entered the yamen, and the county official asked, "Why are you arguing?" A replied, "I said three-seven-twenty-one, and he said three-seven-twenty-four, and we quarreled like this for a day." The county magistrate then ordered A to be dragged out left and right, and twenty boards were beaten, and B was released.
A was very unconvinced and asked, "Obviously I am right, why don't you beat him?" The county magistrate replied, "I can quarrel with the people of 3724 for a day, who will you fight if you don't beat you?" ”。
Tell this story, I hope the landlord will think about it.
-
There are three reasons for this.
1: There are too many users, so naturally everyone has them.
2: In order to earn that bit of experience for replying to a question, it will be returned.
Note: Management may not be managed, even if there are reports from other netizens; Just ignore the random answers, the consequence of their time-consuming brushing is、When redeeming or drawing something、The management will check the relevant information、If it belongs to this kind of behavior,Directly remove the redemption of the prize qualification and other punishments,This is the so-called self-reaping the consequences。
-
Some people just want to earn levels and points.
Some people are just bored.
In fact, most people are still very enthusiastic and serious.
Can't ignore those who work hard because of some black sheep, the Internet is also a river and lake, I hope the landlord will keep a normal heart, we will meet anyone, for people who can't do anything about themselves, you can laugh at it.
-
It's very stressful to answer your question, it's true that there are a lot of people like this, and it is undeniable that in some cases, I feel like I have this kind of behavior, this kind of behavior is really helpless, say people, people stop and help you answer questions, it's better than those who maliciously pour water, such as "I passed by."": I don't know"。Needless to say, the questions he answered did not solve the problem substantively.
Therefore, the key is to be personal, let yourself have a rigorous attitude, and indeed have the mentality of helping others, rather than blindly focusing on your own experience and wealth. This is a question that is indeed worth pondering for everyone.
-
As long as it is not involved in large incidents on the Internet, there is no need for any legal responsibility, and it is not necessary to know the real age, bachelor's degree, and cultural background of others.
1。There are roughly three types of such people, one is the immature person, who is joking, thinking that he is joking, and spoofing your problems. The second kind only knows some basics, and feels that they can solve problems often and find the questions asked by others on the Internet, and the consciousness of their own understanding answers so that the answers are inexplicable, and even copied over, and the third kind of people see that there are questions and answer them casually and answer them subjectively.
The first type of people only want to spoof your problems, it doesn't matter to them whether they upgrade the experience or not, the second kind wants to upgrade to get experience, and the third kind of people don't care if they don't give it, but they are idle and have nothing to do.
2。Basically, a person with high quality and education, and a person with high social status have no time to do such a thing. There are more men.
3。Just like before, the Internet is just a communication platform, and there is no need for any responsibility, but the person who asks believes that if there is really any health problem, it is still to go.
Medical Consultants.
-
1. To give myself extra points (just like me) 2. Boredom 3. Because of being online
-
The forest is big, there are all kinds of birds, don't you see the streets full of **? Not to mention people who don't know each other online?
-
There's no way to help, not to mention that there are a lot of people, different personalities, and experience and tasks.
-
In fact, this kind of person just doesn't know how to pretend to understand, in fact, they want to use what they know to help others, but they don't have the ability, but they want to show themselves. It's the kind of person who wanders around with a bottle less than half a bottle. I don't know much about work and study, and I don't know why before I understand it.
There are generally more bachelor's or high school degrees. They didn't deceive, because sometimes what they said was right, how can there be the pressure of false fame on the Internet, and some people are not afraid of the pressure of false fame in their lives. Some of the girls around me are like this, they work in Beijing, and after returning to the small city, they feel that they are superior to others, and they feel that they have seen a lot, but in fact, it is not the case at all.
I couldn't pass the graduate school entrance examination, and I also advertised myself everywhere for the graduate school entrance examination, how many points did I get in a certain subject...
To put it bluntly, vanity is at work. Those who have real talent and real learning are often low-key.
-
1. I think that some of the answers are not necessarily right, but there are some good answers that need to be learned, and they know that their answers cannot be adopted, so they just want to make a fun and type "A" or something messy.
2. Education and status cannot be determined, but it must be a little unserious.
-
Kiss. I think it's because of the lack of responsibility.
-
Did the questioner just leave it alone?
-
Will boil slower because it takes longer to absorb heat.
I'm guessing your question is why a pressure cooker cooks good rice faster. This has nothing to do with how fast it boils, but rather the faster the food cooks at a higher temperature (the higher the boiling point, the better the temperature that can be reached in the pan).
-
The boiling point rises, that is, the temperature required for boiling increases, and it is difficult to boil.
-
If the boiling point of the water rises, the water will boil later.
-
Equipment beakers, test tubes, alcohol lamps, beaker holders, test tube clamps. Milk, water. During the experiment, add milk to the beaker, fill the test tube with water, heat the beaker and put the test tube into the beaker, and observe whether the water in the test tube is boiling when the milk boils.
If the water boils, the milk has a high boiling point, then switch the water and milk to do it again.
Conclusion: Milk has a high boiling point.
-
Happiness is contagious, answering other people's questions, when they are adopted, happiness will also spread, looking for all available time to create happiness, this is the reason for answering questions, I am such a person.
-
Yes, it's because it's too nothing.
Let's talk!
-
There are always people who don't go to work. With children, like I don't go to work now, with children.
-
That's overzealous, and I'm that type
The solar calendar is the 4th of July, and the constellations are looking for them by themselves, searching! Constellations are on the line! He gives the range....You're looking at the gregorian calendar I gave! I use **, I can't check it!
Bike sharingThe length of the is almost two meters; There are many models of shared bicycles, and the ofo wheel radius is the largest, reaching 29cm. The rest are almost all around 27cm. >>>More
People can't live without water, but drinking too much water can also cause poisoning. This view may be unfamiliar, but in fact, cases of water poisoning caused by large amounts of water drinking have been reported in the United States as early as the 30s. Later, the United Kingdom, Canada, Germany and other countries successively reported some cases of poisoning due to excessive drinking water. >>>More
Your birth details are:
Date of birth: 1991-06-10 >>>More
Depending on what kind of flooring you want to make, whether it is reinforced or solid wood, the reinforced composite is about a little more than 80 to 100, and the solid wood is 180 or more. It also depends on what tree species you are doing.