Предмет: Химия, автор: dydkajoker88

за загальною формулою складіть молекулярні формули алканів якщо в молекулi э 4,7,9 атомiв карбону

Ответы

Автор ответа: alexlar30

1

Ответ:

С4Н10

С7Н16

С9Н20

Объяснение:

фото

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Why is this train so popular? A hundred years ago, most immigrants lived in
Manhatten, but in 1910 Manhattan was overcrowded and life was very difficult.
Then in1917, things improved, thanks to a new train to suburbs called Queens.
Immigrants moved out of the city because there was more space in Queens, but
they could still get to work in Manhatten.
These first immigrants came to New York to escape from poverty and war,
and to have a better life. Today, people come for the same reasons. Manuela
Garcia’s family is typical. Her father, Tomas, came from Mexico in 1986 and sold
tacos from a small food stall next to Corona station. Tomas got through hard times,
saved his money and bought a bakery. Today the jukebox there plays Mexican
songs and satellite TV shows Mexican TV programs. “We are proud of our culture,
but the bakery is not just for Mexicans”, says Tomas. “We have Polish and Turkish
customers, too. We all get on with each other.”
The train speeds past LaGuardia airport as the rain stops and the sun comes
out. Manuela looks out of the window and watches the planes take off. People are
getting away to experience the world. Manuela smiles. She doesn’t need to go to
faraway countries - the world is right there on the Number 7 train.

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