Explain some phenomenon, can you explain this phenomenon?

1.The temperature of the gas around the ignition rises, forming a hot gas, which is less dense than the air, so it rises.

2.The main ingredient of soda is carbonic acid, and CO2 is decomposed due to shaking.

3.CO2 came out of the stomach because the temperature of the soda rose in the stomach.

4.The nose is in contact with concentrated CO2, and CO2 is acidic, so the nose feels sour.

Kong Ming Lantern: Hot air is lighter than cold air, and it is a reason to ignite a hydrogen balloon. The carbon dioxide molecules in the soda are flushed out when the bottle is opened because the carbon dioxide is compressed in the bottle.

And hiccups are pretty much the same thing... The nose is in contact with concentrated carbon dioxide, and carbon dioxide is acidic, so the nose feels sour. That's it...

1.When the fire is lit under the Kong Ming lantern, it produces hydrogen, which is the lightest gas in nature and can drive the Kong Ming lantern upward.

2.There is carbon dioxide in the soda, and the shaking gas will be separated from the soda.

3.Same as 2

Case Study: The Prisoner Dilemma Match.

Let's say you're playing a prisoner's dilemma with a "suspect" who is locked up in another room. Moreover, imagine that this game is not played once, but many times. The final score you get for your game is the total number of years you have been imprisoned.

You want to make that score as little as possible. What strategy should you use? Should you start by confessing or keeping silent?

How will the actions of another participant affect your confessional decisions later on?

The prisoner dilemma is a complex game. To encourage cooperation, participants should punish each other for uncooperative behavior. But the previously described strategy of Jack and Jill's water cartel – that as long as the other defaults, one party defaults forever – is not forgiven.

In a game that has been repeated many times, it may be more desirable to allow participants to return to the outcome of the cooperation after a period of non-cooperation.

To illustrate which strategy is best, political scientist Robert? Robert Axelrod played a match. People enter the game through a computer program designed to repeatedly play the prisoner's dilemma.

Each program in which the game is played corresponds to all the others. The one who gets the procedure with the fewest total years in prison is the "winner".

The winner results in a simple strategy known as a pay-for-one. According to the report-for-report, participants should start with cooperation, and then do what the other participant did the last time. Therefore, the participants must cooperate until the other party breaches the contract; He defaulted until the other party re-cooperated.

In other words, the strategy starts with friendship, punishes unfriendly participants, and, if the other person changes, gives forgiveness. To Axelrod's surprise, this simple strategy is better than all the more complex strategies that people lose.

Category: Education Science >> Entrance Examination >> College Entrance Examination Problem Description:

1) Drip chlorine water into the purple litmus solution, you can see that the litmus solution turns red first and then fades.

2) Chlorine water is dropped into the silver nitrate solution, and a white precipitate is generated.

3) Add sodium carbonate solution dropwise to chlorine water, and there is a residual sliding body.

Whoever explained it to me.

Thank you in advance. Analysis:

cl2+h2o=hcl+hclo

Hydrochloric acid is acidic and makes litmus red, and HClO has a bleaching effect that fading the litmus color.

cl2+h2o=hcl+hclo

HCl+AGNO3=AGCL+HNO3, silver chloride is a white precipitate.

cl2+h2o=hcl+hclo

2HCl+Na2CO3=2NaCl+CO2+H2O, the gas produced is carbon dioxide.

A "phenomenon" is everything that is manifested by a thing and can be perceived by a person. Phenomena are what people can see, hear, smell, and touch, and can be divided into natural phenomena and social phenomena according to whether they have natural attributes.

Interpretation: 1. The external connection and objective form of things in the process of occurrence, development and change. Such as: natural phenomena.

2. It is said that gods, Buddhas, bodhisattvas, etc. appear in the world, which is also called manifestation. Such as: Guanyin phenomenon.

3. The cultural and artistic circles refer to the social effects caused by certain creations or research. Such as: Yu Qiuyu phenomenon, Li Er and cultural phenomenon.

4. It refers to a social atmosphere or behavior that has existed for a period of time and is well known to everyone.

Phenomena are paraphrased, and examples are given.

Phenomenological interpretation refers to the things, events or processes that are presented under certain conditions. It exists objectively and can be perceived, observed, and measured. Phenomena are the basis of scientific research and understanding, and through observation, experimentation and analysis of phenomena, people can reveal the essence and laws of things.

For example, water freezes into ice when it is below 0, which is a physical phenomenon. In daily life, we can prove this law by observing the phenomenon of water pipes freezing and cracking or freezing on the surface of the water at cold ridges or in weather. For example, when conducting scientific research, people need to observe, experiment and measure various phenomena, such as chemical inversion and physical motion, in order to reveal the nature of things and the laws of hand-to-hand conduct.

Question 1:"phenomenon"What does it mean that he is strong, this is a phenomenon.

Question 2: What is the meaning of the characteristics of phenomena Phenomena are things that people can see, hear, smell, and touch. Phenomena can be divided into natural phenomena and social phenomena according to whether they have natural attributes or not.

For example, the moon rises in the east and sets in the west, the wind and rain, the apple falls to the ground, the sun is round, the dog has four legs, the man has two hands, the birth and death of human beings, and the life and death of human beings are all natural phenomena; For example, wars, crimes, uprisings, the birth and demise of capitalism, the birth and demise of states, the gap between the rich and the poor, and inflation are all social phenomena.

There are many characteristics of any object, and people form a concept based on the characteristics of a group of objects. The psychological reflection of these common traits is called the characterization of the concept.

Question 3: What does natural phenomenon mean? Natural phenomena refer to the spontaneous formation of a certain lead filial piety in nature due to the operation law of nature, which is completely unaffected by human subjective initiative.

For example, the moon is cloudy and sunny, the four seasons change, the climate is warm and cold, windy and rainy, day and night, etc. There are mainly physical phenomena, geographical phenomena, chemical phenomena and so on. Relative to a social phenomenon caused by humans.

Connection: The above is the introduction in the encyclopedia.

In fact, the simplest example of a natural phenomenon is the rising and setting of the sun, which is not man-made but a natural phenomenon.

Question 4: What does atavism mean? Anatism is the phenomenon in which an individual organism develops traits that its ancestors possessed! Plain and simple Take my answer. The first one is to copy someone else's Farewell Filial Piety.

Fried crispy food is not crispy after being left for a period of time, indicating that the air contains moisture and is absorbed by the food, and the food is not crispy when it is damp.

There is a rhizobia in the root nodules of some leguminous plants, which can directly absorb a gas in the air and convert it into nutrients: nitrogen is one of the nutrients needed for plant life, most plants need to supplement nitrogen by applying nitrogen fertilizer, and leguminous plants have rhizobia in their roots, which can convert nitrogen in the air into nitrogen-containing compounds for absorption

The first question: according to China's elevation measurement system, the Yellow Sea elevation system is adopted! to determine our elevation.

And due to the movement of the earth's crust, the ground level rises and falls! It's a natural way for the ball to spin, and the Himalayas are in a certain position, so there will be a phenomenon of "growing taller" every day!

The first two Naizai. I don't know!