Предмет: Химия, автор: Dslike

Найти объём сероводорода в котором содержится 50г этого газа и вычислить его плотность по воздуху . Пожалуйста срочно

Ответы

Автор ответа: Eterry
1
Считаем моль H2S: 50/34 = 1,47 моль. Занимаемый им объём: 1,47*22,4=32,928 литра. Относительную плотность считают по молекулярной массе. Для воздуха она принята за 29, а у сероводорода - 34. Тогда плотность сероводорода по воздуху 34/29 = 1,172.
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Fill in the gaps with the following words
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tickled
harness
hilarious
craze
hammock
weightless
boost
nostrils
swung
concentration
caught
poses

1. The team lacked __________ and lost the game.
2. Aerial yoga is the latest fitness ___________ to hit the UK.
3. He ________ his hands back and forth as he walked briskly.
4. He climbed into the ________ and took a nap.
5. During our yoga class we learned how to do traditional __________ on the floor.
6. She really enjoyed the laughter yoga session and thought it was _______.
7. The acrobat felt ____________ as he soared through the air.
8. She was walking by the beauty salon when an advert about fish pedicures __________ her eye.
9. She inserted a tube into her __________ in order to smell the oxygenated fragrances.
10. You should always use a safety ___________ when you go rock climbing.
11. She _________ me with her fingers and I started giggling.
12. Eating healthy snacks helps to _________ your energy throughout the day.
Task 3. Fill in

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of
into
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over
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1. The mice nibbled ______ at a piece of cheese.
2. As soon as she put her feet into the tank the pedicure fish swarmed ______ to her.
3. She couldn’t help laughing ________ loud when she heard the joke.
4. She hung upside down in a sling suspended _________ the ceiling in aerial yoga class.
5. He ran out ______ breath after jogging for twenty minutes.
6. The racing car drove off _______ top speed.
7. She was flicking ________ a magazine while getting a pedicure.
8. She slipped off her shoes and plunged her feet ______ the