thiophene-2-carbonitrile

Lead and mercury are mostly used for alchemy in the world, and their properties are complex and treacherous. Lead is dark in color and heavy in quality, and is often found in all kinds of ore veins. Its chemical properties are similar to those of metals, and it can respond to acids and generate hydrogen gas. However, it also has its own specificities.
When lead encounters oxygen, it is prone to lead rust. Although this rust is thin, it can slow down its further oxidation. And the melting point of lead is quite low, only more than 300 degrees, and it is easy to melt into a liquid when it is burned. As for its reaction with salts, it is also wonderful. When it encounters with some metal salts, it can change and replace the metal with its activity.
Mercury, at room temperature, is actually a liquid, with silver light flowing, like a spiritual substance. Its volatility is strong, it gradually dissipates in the air, and mercury vapor is toxic and cannot be ignored. Mercury is chemically active, slightly weaker than lead, and it is not lazy to react. When it encounters sulfur, it can quickly combine and form mercury sulfide, which is the main component of cinnabar. Its color is vermilion, and it was often used as a pigment and an important medicine for alchemy in ancient times.
Although mercury is not easy to react with common acids, it can also be combined with strong oxidizing acids, such as nitric acid, to generate mercury salts and other substances. And mercury and metals can form amalgam, and this amalgam may have special physical and chemical properties, and it is also useful in various processes.
Lead and mercury used to be the key things in the art of alchemy, but their nature is toxic, and misuse will harm the body. Today's chemistry, careful study of the nature of the two, although they are useful, they must be handled with caution, so as not to harm the living.

The method of calcining mercury has three ways. First, it is combined with sulfur. Sulfur is dry and intense, and mercury flows easily. When the two meet, sulfur can produce mercury. First take pure sulfur, crush it into powder, put it in a crucible, heat it slowly, and wait for it to melt slightly. Pour in the mercury liquid, and stir it with a shovel urgently to make the two mixed. Sulfur and mercury compete, and their color gradually changes, or red or yellow, depending on the heat and the ratio of the two. The key here is to pinch in the heat. The fire is fierce and the mercury escapes, and the fire is slightly difficult to combine.
Second, take cinnabar as a lead. Cinnabar is also the sulfide of mercury. First grind the cinnabar into a very fine powder, put it in a cauldron, and slowly burn it under a slow fire. The cinnabar is heated, and the mercury is gradually precipitated, and then collected by condensation. This method needs to be operated with caution, because the cinnabar contains high mercury content. If you are not careful, the mercury gas will escape and hurt people. The collected mercury can be combined with other drugs to increase its medicinal power.
Third, lead is used as a medium. Lead is heavy-sinking, mercury is agile, and the two are combined. Lead can bundle mercury. First melt lead as a liquid, put mercury in it, stir it evenly, and make it embrace each other. Then put it in a special furnace and calcinate it at a suitable temperature. Lead and mercury combine to form new substances. After many refinements and separations, pure mercury and mercury-containing compounds can be obtained.
These three common methods have their own advantages and disadvantages. With sulphur and mercury, the operation is relatively simple, but the heat is difficult to control; with cinnabar as a guide, the mercury is pure, but it is necessary to prevent the harm of mercury gas; with lead as a medium, it is easy to combine, but the extraction is complicated. Those who perform this technique should carefully observe the physical properties and abide by the rules, so as not to cause harm to the body.

"Arsenic, that is, letter stone, is also known as arsenic. The name of the living is Pi Huang, and the name of the refiner is arsenic." Arsenic-2-methyl ether, this substance is indeed used in many fields.
In the field of medicine, past doctors have explored its wonderful effects. Although arsenic is highly toxic, it can be used as medicine to treat certain diseases through exquisite processing and reasonable compatibility. Arsenic-2-methyl ether-related derivatives may have unique pharmacological activities, or can help to explore new drugs, opening up a way to overcome difficult and complicated diseases.
In the chemical industry, it can be used as a special catalyst. In specific chemical reactions, it can significantly change the rate and direction of chemical reactions, make chemical production more efficient and accurate, improve product quality and output, and inject impetus into the innovation and development of the chemical industry.
Agriculture also has its own impact. Appropriate amount of arsenic-2-methyl ether can be used to make special pesticides. It can effectively eliminate specific pests, and compared with some traditional pesticides, it may have better environmental compatibility and selectivity. It can ensure a good harvest of crops while minimizing the adverse impact on the ecological environment.
In the metallurgical industry, it can be used as an ore flotation agent. It can improve the surface properties of ores, promote the efficient separation of target minerals and gangue minerals, and improve the purity and collection rate of metal refining, which is of great significance to the optimization of metallurgical processes.
However, it is important to keep in mind that arsenic-2-methyl ether is highly toxic, and strict regulations and safety guidelines must be followed when using it to ensure the safety of personnel and the environment from contamination.

Mercury, commonly known as mercury, is one of the metallic elements. It is liquid at room temperature and pressure, and has a metallic luster, which is one of the most significant physical properties of mercury. The melting point of mercury is extremely low, about -38.87 ° C, which allows it to maintain a liquid state in a low temperature environment. In addition, the boiling point of mercury is 356.6 ° C. When heated to this temperature, mercury will transform into a gaseous state.
Mercury has a high density of about 13.59 grams per cubic centimeter. Compared with common metals, such as water, the density of mercury is only 1 gram per cubic centimeter. The density of mercury far exceeds that, so mercury will sink rapidly in water. Its texture is soft and fluidity is very good, like a smart silver liquid, which is easy to flow, gather and disperse in the container.
The surface tension of mercury is quite large, so that it will form nearly spherical droplets on a flat surface, which is like round silver beads, which is quite interesting to watch. And mercury has good electrical conductivity and has certain applications in the field of electricity.
Although mercury has the characteristics of metals, it is different from ordinary solid metals. Its liquid state and special physical properties make it unique in many fields. However, due to its toxicity, it needs to be used with extreme caution.

In today's world, in the city of Jia, everyone thinks of the nobility and lowness of things. As for the age of Wu himself, what is the price of the A and vegetable produced? It is also often inquired by everyone.
I have heard of the ancient city, and the price of the thing is not only based on its quality, but also related to the time and the place, and also involved in the number of supply and demand. For those who are A and vegetable, what is bred by the time and what is produced by the land are the main reasons. If the weather is good in their years, and the soil is fertile and fertile, the production of A and vegetable will be abundant, and the city will overflow, and their price may be flat and drop. There are many things to cover and those who seek are limited. Jia people want to sell quickly, so they cannot ask for a high price.
However, in times of disaster, droughts and floods occur from time to time, and insects and locusts are abusive, so the production of armor and vegetables will decrease. The city is scarce, but there are still many seekers, and the price is bound to rise. When people compete for purchases, Jia Zhe is curious, and the price is soaring. This is the common sense of supply and demand.
Also, the price is also related to the distance of the place. If the place of origin is close to the city, the freight will be saved, and the price will be cheap; if the place of origin is far away, the transshipment is difficult, and the cost is a lot, the price will increase. And different places have different preferences. If people in a place are only addicted to armor and vegetables, and there are many people who want them, the price should also be
Furthermore, the profit of merchants also affects their prices. If a group of experts agree to the same price, or stock up to raise the price, the price will be higher; if they compete with each other to attract customers, the price may drop.
To sum up, the market price of a vegetable in the year of Wuji depends on the time and place, the number of supply and demand, and the business's plan. It is difficult to say. Whether it is peaceful or high, it is all in the midst of all kinds of fate.