Thiophene-2-sulfonamide

The sea serpent, the genus of the sea fault, its shell is radiant, and the ancients often cherish it. The chemical properties of the sea serpent can be particularly studied.
The main component of the sea serpent's shell is calcium carbonate. This is a common inorganic compound with a hard texture, which can protect the sea serpent from the enemy. Calcium carbonate exists in nature, such as calcite, marble, etc., and its chemical properties are relatively stable. When it encounters strong acid, calcium carbonate reacts chemically and can produce carbon dioxide gas. Looking at the sea serpent shell, if you drop dilute hydrochloric acid, you will see effervescence, which is the reaction between calcium carbonate and acid.
And the body of the sea serpent may contain many trace elements, such as iron, zinc, manganese, etc. Although these elements are small in amount, they play a crucial role in the life activities of the sea serpent. Iron is related to the synthesis of proteins related to its respiration; zinc is involved in the activity regulation of various enzymes; manganese is also involved in the metabolic process in its body.
Furthermore, during the growth process, the sea serpent interacts with the surrounding seawater environment. Chemical components in seawater, such as sodium chloride, magnesium sulfate, etc., may seep into the body of the sea serpent, affecting its chemical composition. The physiological activities of the sea serpent itself also react on the chemical properties of seawater. For example, the sea serpent filters plankton, ingests nutrients, or changes the concentration distribution of elements in local seawater.
Overall, the chemical properties of the sea serpent involve not only the characteristics of calcium carbonate, the main component of its shell, but also the role of trace elements in the body, and are closely related to the chemical interaction with the seawater environment. These are all important aspects of exploring the mysteries of the sea serpent.

In "Tiangong Kaiwu", arsenic-2-realgar (here "shows silver realgar" is suspected to be a miswrite of "realgar"), its common application fields involve medicine, alchemy and pigments.
In medicine, realgar has the effect of detoxifying insects, removing dry dampness and removing phlegm, and intercepting malaria. "Compendium of Materia Medica" says: "Realgar is an essential medicine for treating sores and detoxifying poisons." In the past, doctors used it to treat scabies, snake bites and other diseases. However, its temperature is toxic, and the dosage and usage should be cautious.
In the field of alchemy, realgar has a very important position in ancient alchemy. Warlocks thought it had magical effects, and realgar was added during alchemy to refine the elixir of immortality. Although this purpose has not been achieved, it has a certain significance in chemical exploration and promotes the understanding of material changes.
In terms of pigment applications, realgar is bright in color and is often used as a pigment for painting and dyeing. In ancient times, realgar was often used to add color to calligraphy and painting, ceramic painting, etc. Dunhuang murals were colored with realgar. After years, brilliant colors still exist, witnessing its excellent pigment characteristics.
In short, arsenic-2-realgar was used in many fields in ancient times, but its toxicity should be paid attention to when using it to prevent harm.

"Tiangong Kaiwu" is a scientific and technological masterpiece written by Song Yingxing in the Ming Dynasty. Among them, the synthesis method of lead (zinc) -2-zinc smelting has had unique wisdom in ancient times.
In ancient times, zinc smelting mostly used calamine (zinc carbonate ore) as the main raw material. One method is to break calamine into small pieces and place it in a special crucible in layers with coal. This crucible needs to have good sealing and high temperature resistance, and is mostly made of clay mixed with other materials. Then the crucible is placed in a furnace and heated with fierce fire. When the temperature reaches a certain level, the zinc carbonate in calamine will decompose into zinc oxide and carbon dioxide. In this process, coal not only provides high temperature as a fuel, but also contains carbon that chemically reacts with zinc oxide. Carbon traps oxygen from zinc oxide, reducing zinc out, and zinc escapes in gaseous form. Due to the relatively low boiling point of zinc, the gaseous zinc will condense into liquid or solid particles when it encounters the inner wall of the upper part of the crucible, which is relatively low temperature, and adhere to the wall, so that it can be collected.
Another method is to pretreat the raw material in some areas. Calamine is first roasted to make zinc carbonate more fully decomposed into zinc oxide, removing some impurities. It is then mixed with a reducing agent such as coal and charged into a special zinc smelting furnace. This zinc smelting furnace has a unique structure, and the lower part is well ventilated to ensure sufficient oxygen supply, so that the coal can be fully burned, and the high temperature reaction environment is maintained. At high temperatures, zinc oxide reacts with carbon to generate zinc gas, which is cooled and condensed through a cleverly designed condensing device.
Although these ancient zinc smelting synthesis methods are slightly simple compared with modern processes, they embody the profound understanding of chemical changes and material properties of the ancients, laying an important foundation for the development of metal smelting technology in later generations.

Alas! It is not easy to know what is going on in the city of the second city. The person who lives in the grass and pillows the soil, is due to human nature, and can be sold for the purpose of the market?
There are also cases of transactions involved in the world, or forced by the situation. If it is not the right place, it is the material used, the work made, and the place where it is located, and the need.
The person who is the father of the tomb will use the grass. If the grass is soft, the quality is good, and the density is dense, the price will be slightly higher; on the contrary, if the grass is coarse and the system is poor, the price will be lower. And the soil of the land, if the soil of the land is easy to obtain and common, it is not good; if the soil of the land is special, or it is concentrated, it may increase.
As for the place where it is located, the capital is large, and the supply is sufficient, or it is flat; in the place where it is located, the supply is scarce, or it is difficult. And the need is low, if there is no problem, the demand is high and the supply is low, the price will be high.
But those who need to be clear, the use of burial is used to express the grief of a filial son, not for profit-making purposes. If you focus on the height of the price, and forget the pain of the price, and the cost of keeping filial piety, it is putting the cart before the horse, and the world does not care. Therefore, it can be said that there is a price for it, but it is not necessary to reduce the root to the end, and lose the right path of living.

In the art of alchemy, many matters need to be treated with caution during storage and transportation.
When storing, the first choice of environment. A dry place must be selected. If it is in a humid place, the medicinal pill is prone to moisture and deterioration, losing its medicinal effect. And it is necessary to avoid direct light, light and heat, or cause the composition of the medicinal pill to mutate. It should also be placed in a cool place. High temperature can change the internal structure of the medicinal pill and dissipate the medicinal power.
Furthermore, the choice of container is crucial. When using porcelain or ceramic utensils, because of their stable nature, it is not easy to react with the medicinal pill. Avoid using metal containers, which have different metal activities, or combine with the ingredients of the medicinal pill, causing the medicinal pill to fail, or even form harmful things.
During transportation, stability is the most important thing. The road is bumpy, and the medicinal pills collide with each other or break, which affects the quality. It needs to be wrapped in soft things, such as silk cotton, soft cloth, etc., to slow its vibration.
In addition, the transportation time also needs to be considered. Over time, the more deeply affected the medicinal pill is by the outside world, so it should be shipped quickly to reduce its exposure time.
The escort must choose a cautious and reliable person. The person needs to be familiar with the characteristics of the medicinal pill and be able to deal with it properly in case of emergencies. If it is hot and cold, the preservation method can be adjusted in a timely manner to protect the medicinal pill. In this way, during storage and transportation, pay attention to everything, so as to protect the quality of the medicinal pill and not lose its efficacy.