simply and clearly, the deputy dean of the faculty of chemistry of the belarusian state university, natalia, promised to tell you hello. so what is crystal from a chemical point of view and how it happens. good afternoon. i am very happy to welcome everyone to the studio. and if we now talk about crystal, then first of all we should decide. we just want to understand the word crystal, and accordingly, if we are talking about rock crystal, as well as the mineral, then the chemical formula of rock crystal is silicium two, i would like to note. here is an interesting fact that even in chemistry classes at school, but they always said that there are two minds to settle - this is the sand formula. so, indeed, sand crystal has the same formula from a chemical point of view, however, depending on the location of the structural units of the crystal lattice. we can observe either rock crystal, or, well, it could be sand, speaking of about crystal as dishes, that is, when we talk about crystal dishes, then, accordingly, the main bases are anyway. and we have two silicium, but at the same time. e, the

hello natalya, deputy dk at the faculty of chemistry of belgus university, in touch. so tell us what is in color cosmetics? good afternoon, ekaterina , first of all, talking about the composition of cosmetics, or there is a cut of decorative cosmetics, the consumer of our beautiful esteemed girls can read everything on the package and talk about some kind of single composition of a cosmetic product. from the point of view of a chemist , it is not possible due to the fact that it is a complex and multicomponent system. if to say, in general, then in any cosmetic product. there is a base, that is , some component that is found in large quantities in this cosmetic product. for example, if we talk about creams, in particular from anal rehab, or bb creams. well, let's just say that a good basis for it will be just water. this is the basis for mascara, this is in fact natalya thank you, but it seems to me that the word chemistry next to cosmetics sounds scary, if we are afraid today when using decorative cosmetics, talking about the safety of cosmetics. first of all, i woul

no, 10 years ago i graduated from the university, faculty of chemistry. now you have to identify the corpse and tell me if you know you this person. very good, let's go depending on what area, well, let's say 1000 squares. at the place of work, there was no time to go myself, but i called them and talked to his boss ursulov worked in a printing house. recently retired. i wrote a statement of my own free will unexpectedly, it turns out at the moment. he can be anywhere. failed, how tall did such pay attention to all items. right here, everything he said was prepared by the catering departments. i think who will go to the newspapers, khmurov sobolev to the sawmill rebrov maksimenko putinkov yashchenko will now be searched here. marinochka what is it? such a nice quiet boy. lacks. but he embodies the portfolio. well, what do you have to say. i don't think she will stay here. she's probably different. find me where this woman lives. hear where you want. find a course, she'll lead us to a course. no, not familiar. marina eduardovna, we would like to talk to you

kargar, razi, a member of the university's faculty, a professor of university chemistry and an expertmining industry. we are at your service, mr. kiyani, a senior expert in economic geology from mashhad. we are at your service. they are in additional languages. mr. mohtashmipour, deputy minister of mining and material processing of the ministry of somat, you did work without overtime on the phone, which was the first year of mohtashmipour's presence in the press. hello, excuse me. i will tell you the details of these countries that have been done for the viewers. i would like to say hello once again. did you understand the discovery that was made? exactly how much of the amount that has been announced can be pure lithium ? that russia and processing restrictions there is a multi-capacity reserve dispute that has been brought up in the country and now this is the first license issued in this field of lithium in the country for a mine in hamedan. we do not have it anywhere else. it has been discovered or is being explored. why is the whole world in our country, the salt lake of qom, wit

kargar razi, a member of the university faculty, a professor of university chemistry and an expert in mining industry , we are at your service mr. kiani, a senior expert in economic geology from mashhad, we are at your service in additional languages mr. mohtashmipour, deputy minister of mining and material processing of the ministry of samet, you did not work overtime on the phone, ask for the first year of mohtashmipour's presence. hello, excuse me , please tell me the details of this country that has been done. for the viewers, how much is it exactly? did you understand the discovery that was made, exactly how much and how much of this amount that has been announced can be pure lithium ? the processing has limitations, the multi-capacity storage dispute has been raised in the country, and now it is the first license that we have in this area of ​​lithium in the country for mining in hamedan, in hamedan , we don't have it anywhere else. the world in our country why go to qom salt lake with all its greatness, we have billions of cubic meters of storage in itself, it is declared above

schoolchildren on march 31 , vocational guidance work will continue on april 1 , the faculties of journalism, physics, chemistryill end acquaintance with the university on april 8 at the faculty of geography and geoinformatics. so much so that all high school students and their parents, including, are expected. but, as for those who still carry their children in a stroller, correspondent alexei boyarskikh has prepared a memo for traveling by public transport. parents should always create a safe environment for their children. virgo, today they will learn how to properly transport a child in a stroller. if you travel by public transport today, a large number of land transport are equipped with two platforms for wheelchairs, if they are busy, drivers recommend that mothers wait for the next flight so that the child does not get injured during unforeseen braking, and you should also not forget about the rules for transporting a child in a stroller at a stopping point, you must wait for a vehicle, and at a safe distance from the roadway. this applies, in principle, to all passengers , but even more so to parents fr

in chemistry, got on the faculty there at age 26 and started a lot of field changing work in chemistry and then biochemistry. his greatest work was the nature of the chemical bond. it's there's the cover page printed there. he starts publishing on the nature of the chemical bond throughout, the 1930s, his work on chemical bonding is the most among the most widely cited scientific wks of the 20th century. he then on to being really interested in biochemistry and living systems. during world war two, he the us government. he developed an oxygen meter for submarines that would help determine the level of oxygen in a submarine. got a presidential medal for that. and then after world war two, he decided, write a chemistry tebook, which became one of the most widely assigned chemistry textboogenerations of chemistry students. this helped him to become independently wealthy. so was a decorated renowned and now wlthy chemist who had helped transform american science in the late 1940s. now that he had his job secure. that he had money. he decided that he would get active in polics. he had never