Вопрос школьника по предмету Химия
Скласти структурні формули речовин: 3-етил-2,2-диметилбутан; 4,4-диетил-3,3-диметил-1-пентен; 2,5,5-триметил-1,3-гексадієн; 4,4-диметил-2-пентин; 2,2-дихлорпропан; 1-метил-2,5-дихлорбензен.
Ответ учителя по предмету Химия
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Misha: Do you have magical holidays, Robin? Can you tell me about them?
Robin: Well, where do I start, Misha? I come from Scotland and my great-grandparents were the Druids. The Druids are magical people. They can speak to the trees and to animals. They can fly and see into the future. They say that a year has two halves: a light half (spring and summer) and a dark half (autumn and winter).
The weather in Scotland is usually cool, but spring and summer are often nice. It is never hot, but it can be quite warm. It sometimes rains, but we also get some sun. The nights are short and the days are long. People work in the fields. Children lie in the sun and play in the woods.
But autumn and winter in Scotland are very cold. The weather is bad. In autumn it often rains and in winter it snows and rains,