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Составьте формулы сложных веществ , образованных элементом кислородом и следующими элементами:
CI(VII),S(VI), As(V), Pb(IV), B(III), Sr(II), Cu(I)-
Предмет:
Химия -
Автор:
makaylazaaq - 6 лет назад
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Ответы 2
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русский язык Разумовская Львова Капинос Львов упражнение 248
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Раскройте скобки употребляя глаголы в Present Perfect, Present Indefinite, Past Indefinite или Past Continuous
1. They (to go) to the Hermitage last week. 2. They (to be) to the Hermitage twice this week. 3. After school yesterday he (to come) home, (to have) dinner, (to read) an article from the latest magazine and (to begin) doing his homework. 4. When your friend (to return) from the south? She (to return) yesterday. You (to go) to the station to meet her? No, I.. I (to be) too busy 5. With whom you (to discuss) this question yesterday? 6. I (to sce) this film this week. I like it very much 7. When I (to enter) the kitchen, I (to see) that m mother (to stand) at the table and (to cut) some cabbage She (to cook) dinner. 8. As soon as I (to hear) a cry, I (to run) out of the room and (to see) that a child (to lie) on the ground and (to cry). "What (to happen)? Why you (to cry)? You (to hurt) yourself?" I asked. 9. As soon as I (to see) him, I (to understand) that he (to work) hard. He (to write) something and (not to notice) anything. 10. When I (to come) home yesterday, the children (to run) and (to sing) merrily. "We (to learn) a new song!" they cried. 11. When the young man (to enter) the room she (to look) at him in surprise. "What you (to want) to tell me?" she (to say). Why you (to come)?" 12. It (to rain) hard when I (to leave) home yesterday, so I (to return), (to put) on my raincoat and (to start) again. 13. Your brother (to return) from the north? Yes, he (to come) a few days ago. 14. You (to be) to the Crimea? When you (to be) there? I (to be) there in 1993 15. Where (to be) your brother? He just (to come) home. He (to take) a shower in the bathroom now.-
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peanut - 6 лет назад
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Качественный реактив на SO4(-2)
А)Na (+)
Б)Ba (2+)
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Предмет:
Химия -
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elainaharrington - 6 лет назад
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