Предмет: Химия, автор: anasersun18

1. Який ряд формул утворений лише з формул солей?
a) Na,S, MgCl,, Ca,(PO2),;
6) NaH, MgO, HPO

Ответы

Автор ответа: mrskokip1

1

Ответ:

Ряд а) Na2S ; MgCl2 ; Ca3(PO4)2

Все соли - сульфид натрия, хлорид магния, фосфат кальция.

Объяснение:

Остальные под б) NaH -гидрид натрия; MgO - оксид магния; H3PO4 - фосфорная к-та

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Русский язык, автор: 15987532486

Как выглядит дуб осенью?

1 год назад

Предмет: Русский язык, автор: zharai

Определи падеж местоимения себя,его синтаксическую роль

1 год назад

Предмет: Окружающий мир, автор: lena19842

рассказ о домах разных народов

1 год назад

Предмет: Математика, автор: mar341

На экскурсию уехали 3/5 учащихся класса, 3/20 учащихся ушли на выставку, а оставшиеся 8 человек готовились к конкурсу. Сколько всего учащихся в классе?

8 лет назад

Предмет: Английский язык, автор: abaevadilnaz

Complete the following sentences using the appropriate tense form: 1. Hello, Pete, where you ____(to go)? — I_____ (to hurry) to school. 2. I______ (to play) computer games at five o'clock yesterday. 3. Where Boris______ (to be)? I______ (to look) for him. He ______(to have) dinner. 4. It______ (to be) six o'clock in the evening now. Victor _____(to do) his homework. His sister ____(to read) a book. His mother and grandmother ______(to talk). 5. We ______ (to wash) the floor in our flat from three till four yesterday. 6. When I ____(come) into the kitchen, mother _____ (to cook). 7. Where your sister _____ (to be)? — She _______ (to do) her homework in the next room.8. She _______ (to cook) the whole day yesterday. 9. 10. What he ______(to do) the whole evening yesterday? –He _______ (to read) a book.11. When I_______ (to go) to school the day before yesterday, I met Mike and Pete. They_____ (to talk) and (to laugh). 12. She ________ (to sleep) when you came home? 13. Don't come to my place tomorrow. I______ (to write) a composition the whole evening. 14. Don't go to Nick's place now, he _____(to work). 15. Yesterday the children ______ (to do) all their homework before mother ______ (to come) home, and when she ______(to come), they_______ (to play) with the cat. 16. You ________ (to do) your homework from eight till ten yesterday? 17. I_______ (to do) my homework at six o'clock tomorrow. 18. He _______(to sit) at the table the whole evening yesterday.

8 лет назад