Ответ по предмету Химия: При взаимодействии 30,93г руды, содержащей карбонат железа(II),с избытком соляной кислоты выделилось 4,48л углекислого газа. Определите массовую долю карбоната железа в руде. Ответ: 25,0%. P.S.: пожалуйста, покажите, как решается!

Предмет: Қазақ тiлi, автор: timur4118

төмендегі берілген ақпараттарды негізгі,қосымша ақпараттарға біліп жаз

6 лет назад

Предмет: Информатика, автор: Toha1254

Срочно помогите пожалуйста срооооооооочно срооооооооочно

6 лет назад

Предмет: Английский язык, автор: Аноним

Teens’ 8 Unit 3 Test 4

1. What gives electricity to solar power station?

a) the sun c) fuel

b) gas d) oil

2. With computers, what does ROM stand for?

a) Reality of Mind

b) Reality of Memory

c) Read Only Memory

d) Read Our Mind

3. Take your umbrella. It ____

a) rain c) is raining

b) rained d) rains

Choose the word logically out.

4. a) smartphone c) documentary

b) horror film d) cartoon

5. a) digital images c) websites

b) software d) journalism

6. ___raining when you went out?

a) Was there c) Is it

b) Was it d) Is there

7. Mike is a careless driver, he drives_________ than you.

a) good c) bad

b) better d) worse

8. She ... in the library the whole evening yesterday.

a) works c) has worked

b) is working d) was working

9. He said he ____ us during the weekend.

a) visited c) will visit

b) would visit d) visit

10. Find the word that is not the type of technology

a) digital c) reporter

b) robot d) computer

11. Nowadays, we depend ___our mobile phones for everything

a) on c) of

b) in d) to

12. The world we live __today is full ____ digital media things

a) in/of c) in/in

b) on/ of d) of/on

13. What does the word “cyber” mean?

a) using computers, especially the Internet

b) the right or opportunity to use or look at something

c) protection of someone or something

d) a small thing that you press to work on a computer

14. “Security”________

a) using computers, especially the Internet

b) the right or opportunity to use or look at something

c) protection of someone or something

d) a small thing that you press to work on a computer

15. What does Personal Information include?

a) nickname, relatives’ details

b) achievements at school

c) future profession, work address

d) address, phone number, name, e-mail address

16. Find only NOUNS

a) available, health, brain

b) hurt, brain, effect

c) rest, brain, effect

d) health, brain, have a rest

17. What does IBM stand for?

a) International Business Machines

b) International Big Market

c) International Browser Mechanism

d) International Business Market

18. A person who cannot stop doing or using something, especially something harmful.

a) fan c) addict

b) fancy d) amateur

19. Put the right form of the verb

We ___ our work before he came.

a) had finished c) finished

b) are finished d) have finished

20. Answer the question from the text about “A Carrot, an Egg and the Coffee Beans”. Who was in a difficult situation?

a) mother’s sister c) housewife

b) mother d) young woman

21. Howard was born _______1st December, _____1971.

a) in/of c) in/in

b) on/ of d) on/in

22. Would you like ___biscuits?

a) any c) a lot

b) some d) much

23. I like working in the garden __ Saturday afternoons.

a) in c) at

b) on d) after

24. Sophie rarely ___ TV in the evening.

a) watches c) doesn’t watch

b) was watching d) is watching

25. She looked ______ on her wedding day.

a) beautifully

b) beautifuller

c) beautiful

d) beautifulest
пжжжжжжсегодьня до вечера нужно70 баллов всё что есть

6 лет назад

Предмет: Алгебра, автор: христофор

в магазин привезли арбузы.в первый день продали 25% всех арбузов,во второй 55% всех привезённых арбузов,а остальные 60 кг арбузов в третий день.сколько всего килограммов арбузов привезли в магазин?

9 лет назад

Предмет: Математика, автор: mbusterden

помогите решить уравнение с логарифмом

9 лет назад

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