Ответ по предмету Химия: складіть рівняння реакції С2Н6 + О2 KMnO4 H2O2 50 баліа

Предмет: Математика, автор: masha9002tk

2+x/5=4/9 пожалуйста помогите напишите с объяснением типо так:
2+х/5=4/9
х=5×4÷9

5 лет назад

Предмет: Физика, автор: AnnaRomanivna

Дано: T=50секунд, t=30 хв
Знайти N, v
Помоги пожалуйста, желательно на украинском

5 лет назад

Предмет: Английский язык, автор: Miа16

1. My brother.........to Ankara tomorrow because his best friend...........married on Saturday.

A) are going / are getting
B) go / gets
C) goes / get
D) is going / is getting

2. A: Why...you.....your homework?
B: Because I....a bad headache.

A) don't... do / am having
B) doesn't... do/has
C) aren't... doing / have
D) isn't... doing / have

3. Helen always....when she...... sad love stories on television.

A) cries / watches
B) cry / is watching
C) is crying / watch
D) am crying / are watching

4.Jacop .........listens to Beethoven and Mozart because he is a really big fan of classical music.

A) rarely
B) always
C) at to moment
D) never

5. Hilary and Delia...... hard on their science project these days. They....a poster of space.

A) is working / are making
B) are working / is making
C) works / makes
D) are working / are making

6. A: I don't like this soup.
B: I agree. It....really bad.

A) don't taste
B) isn't tasting
C) is tasting
D) tastes

7. Dilar..........to work on Saturdays because she ........ the weekend off.

A) is never going / is having
B) never goes / has
C) never go / isnt having
D) are never going / don't have

8.My sister and I...... dad today. We.........flowers in the garden.

A) are helping / are planting
B) help / plants
C) am helping/plant
D) helps /is planting

9. I....on holiday to Germany every year and I ....at a very nice hotel near the beach.

A) am going / often stays
B) go / always stay
C) don't go / are sometimes staying
D) aren't going / usually stay

10. In England it usually..heavily all year long, but this year the sun....most of the days.

A) isn't raining / shines
B) rain / isn't shining
C) rains / is shining
D) doesn't rain / shine

11. I..........healthy teeth because I.........my teeth twice a day: in the morning and at night.

A) have / brush
B) has / brushes
C) have / are brushing
D) am having / brush

12. A:....this pullover...... to you?
B: No, it doesn't. Cain....a pullover like this.

A) Do ... belong / is owning
B) Are ... belonging / isn't owning
C) Does ... belong / owns
D) Is ... belonging / doesn't own

13. A: What....Sera and Fatma.....about?
B: I....their conversation is about films.

A) do ... talk / am thinking
B) is ... talking / think
C) does ... talk / is thinking
D) are ... talking /think

14. A:...... you.......playing video games ?
B: Yes. I do.
A: Then we can play onMonday .
B: Sorry, I can't. I .........swimming with my friends on Mondays.

A) Do.......like / go
B) Are....liking / am going
C) Isn't .....liking / don't go
D) Don't ....like / aren't going

15. Gina....a new fashion shop next week because she....to sell clothes and accessories.

A) doesn't open / is wanting
B) is opening / wants
C) open / doesn't want
D) isn't opening / isn't wanting

16. Hank and Jack....at 6'dock to discuss their problem and to find a solution to it.

A) is meeting
B) are meeting
C) doesn't meet
D) meets

17. A: I....a birthday part for Giles.
B: That's great Can I help you ?
A: Of course, you can.I......to choose the decorations now.Let's pick them together.

A) organize / tries
B) is organizing / are trying
C) am organizing / am trying
D) organizes / try

18.They .......Thomas because he....lots of mistakes on the project.

A) constantly criticize / still make
B) are always criticizing / is still making
C) never criticizes / still makes
D) are seldom criticizing / still making

19. My brother....me these days because he my laptop computer without permission.

A) annoys/use
B) annoy / is using
C) is annoying / is using
D) are annoying / uses

20. A: How much....your dad........?
B: He is eightyfive kilos.

A) is/weighing
B) do/weighs
C) does/weigh
D) is / weigh

5 лет назад

Предмет: Математика, автор: elizagusmanova

решить уравнение: 5 целых 4/15+y=-2 целых 5/12

9 лет назад

Предмет: Литература, автор: BABKA100500

Здравствуйте помогите решить кроссворд осталось одно слово Весенняя зелень на полях 6 букв четвёртая о что это может быть

9 лет назад

складіть рівняння реакціїС2Н6 + О2KMnO4H2O250 баліа

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складіть рівняння реакції
С2Н6 + О2
KMnO4
H2O2
50 баліа