Вопрос школьника по предмету Химия
Напишите уравнения реакций для осуществления превращений: С2Н2→ С6Н6→ С6Н5Cl →
С6Н5ОН → С6Н5ОNa
↓
2,4,6-трибромфенол.
Ответ учителя по предмету Химия
Написал бензол в структурном виде вместо молекулярного (так тоже правильно)
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Ian Johnson, a 27-year-old builder, went to work to Australia for a year, leaving behind his girlfriend, Amy. Ian and Amy missed each other a lot and after being six months apart Ian planned a surprise. Without telling Amy he caught a plane back to England to see her. After a 24-hours flight via Singapore and a 17,600-kilometre journey he finally arrived at her house in Yorkshire in the north of England, carrying flowers, champagne, and an engagement ring. He rang the doorbell, but nobody answered. He had a key to her house so he opened the door and went in. The house was empty. Ian thought Amy had gone out for the evening and sat down to wait for her to come back. Tired after his long journey, he fell asleep. When he woke up, his phone was ringing …
небо затянулось тучами. нас застала гроза с громом, и молнией и ливнем. в лужах плескались воробьи и голуби. луга окрасились в синий,желтый,сиреневый цвета. зимой солнце светит,но не греет.