Предмет: Химия, автор: anna1903s

Напишіть структурні формули:
a) 2-етил-3-метилбутаналь
б) аніліну
в) 2-амінопропанової кислоти
г) 4-метилпент-2-ину

Ответы

Автор ответа: Аноним

2

a) CH3CH(CH3)CH2CHO

б) C6H5NH2

в) NH2CH2CH2COOH

г) CH3C≡CCH2CH(CH3)CH3

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Українська мова, автор: maksimbevz233

простим є речення:
а) золотожари літня ніч губила, і матіола мліла запашна
б) зігрій мене, бо осінь за вікном про себе тихим сумом сповістила
в) то все було в весняній круговерті, у юності щасливому гнізді
г) а вже весна, і знову серця щем, і знову надія мертва оживає

1 год назад

Предмет: Английский язык, автор: 536546rt

Помогите срочно пожалуйсто дам 40 баллов Переказ тексту a giggle box and a leaky faucet на англійскій мові
Текст
every day after lunch Mrs Jewls read a story to the class. dana hated stories.
the last book was the story about a pig. it was very funny. All the children laughed. dana couldn't stop laughing. John called her 'a giggle box'.
When dana broke out laughing at the lesson, John said: "there goes the giggle box." She hated John.
the other story was very sad. dana couldn't stop crying. John called her 'a leaky faucet. "Who will fix the leaky faucet?" he asked.
Mrs Jewls rang her bell, and all the children sat quietly, the teacher was reading a story about a little baby-animal. the story
was sad because a car killed his mother.
dana cried.
the next day dana came up to Mrs. Jewls for a talk.
"Can I go out when you read?" asked Dana. "Why?" asked Mrs. Jewls.
"i hate stories," said dana. "i laugh and cry too much."
"you don't hate stories, dana," Mrs. Jewls told her. "y ou love stories. i would like other children to be able to laugh and cry like you."
"Really?" asked Dana. She always thought she hated stories when she really loved them... Hmm... She was glad.

1 год назад

Предмет: Английский язык, автор: kadirhanovashahzoda

ПОМОГИТЕ БЫСТРО ПЖЖЖ
5 Choose the correct words to complete the conversation. Claire: Hi, Amy. Are you going to the dance party this weekend? Amy: No, I'm not. I hate ¹b ! Claire: What? You do? I thought you 2.... dancing lessons. Amy: I did. But I 3.... enjoy them! It was very difficult, and the other students weren't very nice. Claire: Oh! Well, I'm sure it will be more fun at the party. You always enjoy 4.... time with your friends. The people 5.... were mean to you won't be there. Amy: I suppose the party will be more 6.... than my dance classes. And I won't have to wear the special shoes 7.... hurt my feet, either! When I took dance lessons, 18... for hours. My feet always hurt. Claire: If you ⁹.... to the party, you can take a break whenever you like. Amy: Thanks, Claire. I 10.... see you there then. a dance 1 2 a taken 3 b dancing b use to take a didn't use b didn't used to to 4 a spend 5 a which 6 a relax 7 a that 8 9 a dance a to come b spending b who b relaxing b where b dancing b coming c I dance c used to take c not use to c to spend c whose c to relax c who c would dance c come

1 год назад

Предмет: История, автор: Goodnight0Baby

Херсонес та Пантікапей існували у складі Візантії?

7 лет назад

Предмет: Алгебра, автор: hcchjvjvjvnv

Найдите пересечение промежутков [2;15] и [-1; 14]

7 лет назад