the chemical formula of dry ice is CO2.

dry ice is solid carbon dioxide, and its temperature is-78.5 degrees Celsius at normal pressure, so it will quickly sublimate at room temperature and become a colorless and odorless gas, namely carbon dioxide. The density of dry ice is higher than that of ordinary ice, with a density of 1.56kg/L, which is 1.5 times that of ice. Because the volume of dry ice becomes larger after sublimation, it is often used for cold storage, transportation, preservation and refrigeration. Dry ice sublimation and heat absorption can also be used for stage smoke effect, artificial rain, air refrigeration and transportation, electricity, environmental protection and so on.

when storing and transporting dry ice for a long time, it should be placed in an incubator to avoid direct exposure to the air. The incubator can effectively prevent the dry ice from sublimating too quickly and help to slow down the temperature change when the dry ice sublimes. When using dry ice, you need to pay attention to safety to avoid dry ice contacting with skin or inhaling the gas after sublimation of dry ice.

Application of dry ice:

1. Making drinks and delicacies: Dry ice can be used to make various unique drinks and delicacies. Adding dry ice to wine or drink can produce a misty visual effect and add interest to the drink. At the same time, dry ice can also be used to make ice cream, salad and other delicacies, adding unique taste and visual enjoyment to food.

2. Create a stage effect: In stage performances, dry ice is often used to create a mysterious and romantic atmosphere. For example, the white fog formed by sublimation of dry ice can create a fairyland-like effect and add unique charm to the performance.

3. Scientific research and teaching: In the field of scientific research and teaching, dry ice is also widely used. For example, dry ice can be used to make a low-temperature environment and simulate physical and chemical reactions at different temperatures. In addition, dry ice can also be used to demonstrate scientific principles such as the three-state change of matter.

4. Cleaning and cleaning: Dry ice can also be used for some cleaning work. For example, dry ice can be used to clean some oil stains and scales that are difficult to clean by conventional methods. This is because the shock wave produced by sublimation of dry ice can shake off the dirt attached to the surface of objects. Dry ice can also be used to clean some inaccessible areas, such as the external walls of high-rise buildings, aircraft engines, etc. Because dry ice will not leave any residue after sublimation, it is very convenient to clean up.