dashaponomarev4
28.11.2021 15:14

Кто же был на самом деле степан разин, разбойником, или освободителем? ​

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Ответ:
lekhalis2002
19.11.2020 23:39
1) Этиленгликоль образуется при окислении этилена раствором перманганата калия.
СН2=СН2 -- KMnO4, Н2О --> CH2 – CH2
                                              |        |
                                             OH   OH

2) Этиленгликоль можно получить при действии водного раствора щелочи на 1,2-дихлорэтан.
СН2Cl–СН2Cl + 2NaOH = HO–СН2–CH2–OH + 2NaCl
3) Этиленгликоль можно получить при действии перекиси водорода на этилен.
СН2=СН2 + Н2О2 = CH2 – CH2
                                |          |
                               OH      OH
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Ответ:
AcidSmile
19.12.2022 07:11
I love playing with a ball, but most of all I love football . As they say , football, soccer and football again ! I play this game from spring to late autumn in sportmaydachyku and school stadium. And in the winter I 'm in the indoor football hall of the sports complex. I was invited back our school physical education teacher , who leads classes there, too .
Football - a very interesting game . It has a maximum speed , intelligence, accuracy reactions endurance. Whatever they said , and football coaches not only the feet but also the body as a whole. The players are also very hardened men chase a ball for the fresh air of early spring to late autumn. Also, football is a team game and develop unity and team spirit. And most of this game beckons me its unrivaled excitement!
I am following the European and world football championship. I am very pleased that the last European Championship , Euro 2012, it was held in Ukraine and Poland. We are not daddy missed a single game on TV.
Of course , I really hoped that the team of Ukraine will come out at least the quarterfinals . Unfortunately , this did not happen .
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