Предмет: Химия, автор: Armyanin

Сила серной кислоты

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Автор ответа: Tinker

Сила кислот завист от константы диссоциации. Серная - сильная кислота. В ряду кислот по убыванию силы она находится после йодоводородной, хлорной, бромводородной и соляной.

Концентрированная серная кислота вызывает ожоги кожи

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1. (This/These) pair ef leggings is a little longer. 2 Sofa never lies. She always (speaks/tells) the truth. 3 Emma's (form/uniform) lay on the chair. 4. Where (are/is) the scissors? S. What was wrong with your test? Why is the (mark/mistake) so low? 6 Andrew (says/tells) he bought a good dictionary vesterday. 7 Statistics (is/are) not a school subject. NHNaMOUtadu Hie u HMwed En HJoutradu aumodaaaoo umug at, in, into. for, of, over, out, to 1. We were tired 2. Sit down, please. The lesson is not. 3. I have no roubles. Can I pay. 4. They tried to talk me. S. Sally is very good. 6. We would like to give university education. 7.1d ike to prepare some special dishes. S.I have two tickets for the concert. l'd like to talk you. the noise in the corridor. yet. dollars, please? of the voyage but couldn't. mathematics. Her marks are always As. our children. Mother's Day. going there with me. Npovran TEKCT H OTMeTb Te yTnepxACHHA nocne Hero, KoTopbie coOTBeTCTayioT cogepwaNHo (T). English school year has three terms, three months each. The names of the terms are autumn term, winter term, and spring term. The autumn term starts on the first Tuesday morning in September. In summer there is the longest break or holidays up to eight weeks. Life at school is more or less the same everywhere. There are usually about 30 pupils in a group and in many schools they wear uniforms. Pupils have classes that are 40-50 minutes long. Between the lessons there are breaks. Lunch time begins at about one p.m. At 4 o'clock in the afternoon school is over and pupils go home. 1. There are four terms in an English school year. 2. The names of school terms, in fact, are the names of seasons. 3. The autumn term doesn't start on Monday. 4. Summer holidays in England are about two months. S. Spring and winter holidays are longer than summer holidays. &. In England pupils have lunch in the afternoon.