Предмет: Химия, автор: АКузьменко

До якого класу неорганічних сполук належать такі речовини:
Fe2o3,CuO, Al2O3,FeO,SiO2,CaO,CO2,P2O5

Ответы

Автор ответа: mrvladimir2

Всі нижче наведені речовини відносяться до класу ОКСИДИ:
Основні оксиди:
Fe2O3 (амфотерний оксид)
CuO
CaO
Al2O3 (амфотерний оксид)
FeO
Кислотні оксиди:
SiO2
CO2
P2O5

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Алгебра, автор: Аноним

5 3/1•(2 5/8) помогите

6 лет назад

Предмет: Математика, автор: beautymegapolis

Удвоенное значение какого числа равно сумме 6 и 2

6 лет назад

Предмет: Английский язык, автор: devochka7vseznayka

даю 50 баллов. нужно расставить слова в тексте.

СЛОВА: shall, made, the, is, prepared, always, to, what, have, have, more, will, been, be, so yesterday, plans

ТЕКСТ: Mother (1)... asks me to do some chores. I always plan what I have (2)... do. That is why I know (3)... things to do first. 4) ... mummy asked me to help her with the party. She (5)... to make this party next Sunday. The guests will (6)... come by 5 p.m. I hope I (7)... have served the table by 4 p.m. Also I will have (8)... all salads by 3 o'clock. I'll have baked (9)... cakes by the late morning. If everything (10)... ready in time I will have (11)... all sand wiches by 4.30. We (12)... bought all necessary food lately. We have three (13)... days left. Mother will have visited her hairdresser by the noon. She (14) ... have taken her new dress from her favourite boutique by 3 o'clock. By the moment the guests come Mummy will have (15)... ready. She will (16)... meeting her guests.

6 лет назад