Предмет: Химия, автор: balovsergei

помогите очень вас прошу!!!!
В прмышленности карбид кальция получается сплавлением угля и негашёной извести. Вычислите массу угля и массу оксида кальция ,необходимых для получения карбида кальция массой 1т.

Ответы

Автор ответа: Zikriolloh

Ответ:

875г CaO

562.5г C

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Приложения:

balovsergei: Напишите пожалуйста дано очень прошу

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My friend’s family.
My friend's name is Lavrov. He lives in Moscow. His family is not very large. He has got a wife and two children. His wife's name is Mary and his children's name are Ann and Nick.
Lavrov's wife is a young woman. She is twenty nine years old. She's a lecturer. She teaches English at the University of Foreign Languages. She has got very many students. She has not got bad students. Her students do well as a rule. My friend's daughter is a girl of ten. She goes to school. She has got a lot of subjects at school. She also learns English. She works hard and knows language well. She doesn't make many mistakes in English. She likes reading. She also helps her mother at home.
Lavrov's son is a little boy. I think he was born five or six years ago. His father takes him to a nursery school every morning.
My friend has got a sister. She is going to be a doctor. She is married. Her husband is a doctor too.
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Нужно пересказать этот текс, 5 предложений.
Вот как нужно начать.

The tittle of this text is - название этого текста...
Fist of all I would like to say that - в первую очередь я хотел бы сказать...
To my mind - по моему мнению
I believe that - я верю в это
On the one hand...on the other hand - с одной стороны...с другой стороны
This text is about - этот текст про...