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Anonymous users2024-02-06Carbon dioxide can be used in the alkali industry, in the sugar industry, in the welding field as a shielding gas, in the plastics industry as a blowing agent (rarely) but also in the production of polymers (R&D stage).
Solid carbon dioxide (dry ice) can be used as a refrigerant.
Dry ice can be used for artificial rainfall.
Clean can be used in the field of refrigerated transportation.
Carbon dioxide can be used as a greenhouse carbon dioxide gas fertilizer.
Dry ice can be used for smoke effects on stage.
Dry ice can be used to extinguish fires.
Dry ice can be used in the food industry.
Dry ice can be used in the medical field, (for freezing).
Dry ice can be used to clean nuclear industry equipment.
Dry ice can be used in the automotive, ship, aerospace, electronics industries.
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Anonymous users2024-02-05Carbon dioxide is preferred by plants and is used for photosynthesis;
It's a greenhouse gas that can warm the planet, haha;
When the carbon dioxide concentration reaches a certain level, it can be prevented**;
The CO2 concentration slowly increases, and it can also make people die bitterly, which seems to be a bit cruel;
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Anonymous users2024-02-04Carbon dioxide is a substance that people are very familiar with, he is everywhere in our lives, because the gas that people exhale every moment is carbon dioxide gas, this substance is useless for people's bodies, but it is very widely used in modern industrial production and life, so what is the use of carbon dioxide?
1. Gas fertilizer. Students who have studied biology know that carbon dioxide is needed as a raw material for photosynthesis in plants. In many farms, CO2 generators are also placed to increase crop yields.
2. Fire extinguishing. With the rapid development of science and technology, more and more types of fire extinguishers have appeared. Carbon dioxide fire extinguishers can be used to extinguish fires in books and important equipment, because there is no residue after extinguishing.
3. Industrial raw materials. We only make many chemical products, which need to use carbon dioxide as a chemical raw material, such as calcium carbonate and sodium carbonate that we are more familiar with.
4. Stage effects. We often see fairy scenes on the stage or in TV dramas. In fact, this effect is caused by the artificial use of dry ice.
5. Refrigerant. Solid carbon dioxide is also called dry ice, and in some places that need to be refrigerated or frozen, we can place dry ice, which can have a good freezing effect.
6. Artificial rainfall. In the process of sublimation, dry ice will absorb a lot of heat, and the water vapor in the air will also condense into small water droplets, which will then play the role of artificial rainfall.
Although carbon dioxide reacts violently with a variety of metal oxides or reducing metals such as aluminum, magnesium, titanium, and zirconium, it is compatible with most substances. When a mixture of sodium and potassium is shocked**. Therefore, you should always pay attention to safety when applying.
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Anonymous users2024-02-03High-purity carbon dioxide is mainly used in the electronics industry, medical research and clinical diagnosis, carbon dioxide lasers, calibration gas for testing instruments and the preparation of other special mixed gases, and is used as a regulator in polyethylene polymerization reactions.
Solid carbon dioxide is widely used in refrigerated dairy products, meat, frozen foods and other perishable foods in transit, and as a refrigerant in many industrial processes, such as crushing heat-sensitive materials, rubber polishing, metal cold treatment, shrink assembly of mechanical parts, vacuum cold traps, etc.
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Anonymous users2024-02-021.Physical properties of carbon dioxide.
Carbon dioxide is a colorless and odorless gas that is soluble in water (under normal conditions, 1 volume of water can dissolve about 1 volume of carbon dioxide, and it will dissolve more when the pressure increases), and its density is greater than that of air. Under certain conditions, carbon dioxide gas can become solid, and solid carbon dioxide is called "dry ice", and dry ice absorbs a lot of heat when it is sublimated.
2.Chemical properties of carbon dioxide.
1) Under normal circumstances, CO2 cannot be burned and cannot support combustion;
2) Reaction with water: CO2 + H2O = H2CO3 (the resulting carbonic acid can make the purple litmus solution red), carbonic acid is very unstable and easy to decompose to generate carbon dioxide and water
h2co3=co2+h2o。In addition, green plants can use carbon dioxide and water for photosynthesis
3) Reaction with clarified lime water: (This reaction can be used to test carbon dioxide).
3.Uses of carbon dioxide ().
Nature of use.
extinguishing fires does not support combustion; The density is greater than that of air.
Refrigerants, artificial rainfall.
Dry ice absorbs a lot of heat when it sublimates.
Carbonated beverages such as beer and soft drinks are made.
Soluble in water and able to react with water:; The resulting carbonic acid is very unstable and easily decomposes to carbon dioxide and water
Gas fertilizers. Green plants use water for photosynthesis.
4.Greenhouse effect.
1) The greenhouse effect refers to the phenomenon of global warming due to the rising carbon dioxide content in the atmosphere, which makes it difficult for the heat absorbed by the sunlight absorbed by the ground to be dissipated. In addition to carbon dioxide, gases that can contribute to the greenhouse effect include ozone (O3), methane (), and fluorochloroalkanes.
2) the greenhouse effect will cause global warming, which may lead to the melting of glaciers at the poles, the rise of sea levels, and the inundation of some coastal cities; Desertification of land, reduction of agricultural production, etc.
3) Effective measures to combat the greenhouse effect: reduce the use of fossil fuels; increase the use of clean energy, such as solar, wind, geothermal, etc.; Vigorously plant trees and afforestation, and strictly prohibit indiscriminate felling of forests.
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Anonymous users2024-02-01Carbon dioxide can be used in the alkali industry, in the sugar industry, in the welding field as a shielding gas, in the plastics industry as a blowing agent (rare) and in the production of polymers (R&D stage) Solid carbon dioxide (dry ice) can be used as a refrigerant.
Dry ice can be used for artificial rainfall.
Clean can be used in the field of refrigerated transportation.
Carbon dioxide can be used as a greenhouse carbon dioxide gas fertilizer.
Dry ice can be used for smoke effects on stage.
Dry ice can be used to extinguish fires.
Dry ice can be used in the food industry.
Dry ice can be used in the medical field, (for freezing).
Dry ice can be used to clean nuclear industry equipment.
Dry ice can be used in the automotive, ship, aerospace, electronics industries.
Dry ice can be used to clean plate rollers in the printing industry, etc.
The chemical formula of carbon dioxide is: CO2. A carbon dioxide molecule is composed of two oxygen atoms and one carbon atom through covalent bonds, and is a colorless and odorless gas at room temperature, with a greater density than air, soluble in water, does not support combustion, and reacts with water to form carbonic acid. >>>More
Taking advantage of the fact that carbon dioxide is not combustible, it cannot support combustion, and at the same time, the density is higher than that of oxygen, which can isolate the action of oxygen. >>>More
Sodium peroxide reacts with carbon dioxide to form sodium carbonate and oxygen by the equation: 2Na2O22CO2 >>>More
All living things have to breathe, and plants are no exception, and they also have to release carbon dioxide during the day, but their light and action during the day are greater than that of respiration, so they release oxygen macroscopically. There is no sunlight at night, and the plants only respire, so they only release carbon dioxide. All plants are like this.
In our country, welding operations need to be licensed, welders are the type of work that belongs to the access category, in the professional qualifications of skilled personnel, only five of the 81 types of work in the access category, welders are one of them, and the actual situation is that most of the industry practitioners are unlicensed operations. With the continuous standardization of technology and the relevant requirements of the industry, more and more people want to take a welding certificate, the advantage of the certificate is still very large, first of all, the salary of the certificate and the non-certificate are very different, often able to reach more than double or higher level. Therefore, the issue of short-term welder training has naturally become a concern for practitioners. >>>More