a) n_CuCl2 = 0,15.2 = 0,3 (mol)

PTHH: 2Al + 3CuCl₂ --> 2AlCl₃ + 3Cu

____0,2<------0,3--------->0,2---->0,3

=> m = 0,3.64 - 0,2.27 = 13,8 (g)

b) \(C_{M\left(AlCl_3\right)}=\dfrac{0,2}{0,15}=1,3333M\)

I.

1. A. /s/     B. /s/     C. /z/     D. /s/

2. A. /d/     B. /d/     C. /t/     D./d/

3. A. /tʃ/     B. /tʃ/     C. /'k/     D. /tʃ/

4. A. /u:/    B. /u:/    C. /u:/     D. /ʊ/

5. A. /ð/     B. /θ/     C. /θ/      D. /θ/

II.

6. had slept

7. goes

8. has taught

9. built

10. was cooking

III.

11. A

12. D

13. A

14. C

15. A

16. B

17. C

18. A

19. B

20. C

IV.

21. D

22. C

23. C

24. B

25. C.

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6. B

7. C

8. B

9. A

10. D

11. D

12. C

13. B

14. B

15. A

16. C

17. D

18a

19d

----------

1 to go

2 answering-ring

3 being - to do

4 listening-bearing

5 eating

6 walking

7 putting

8 not to speak

9 to reading

10 to see

11 to visit

12  to hear

13 to come

14. to go

15 to walk

16 saving

-----------------------

1d

2b

3a

4b

5c

\(\text{#♪◈₰♣}\)

1. không hiểu? nature/ei/ chance/a:/ gravity/e bẹt/ basic/ei/
2. D
3. C
4. B
5. A (đuôi eer trọng âm rơi vào chính nó)
6. A
7. B
8. C
9. A
10. B
11. B
12. A
13. D
14. C
15. D
16. A
17. C
18. A
19. C
20. D
 

21. It’s 3:30. Chris _____ to the football so we’d better not ring.

A. will be going B. went C. goes D. gone

22. I _____ during rush hour.

A. will be driving B. will have drive

C. will be drive D. drives

23. He will not be _____ the train today.

A. take B. taken C. taking D. takes

24. They _____ the square that weekend.

A. using B. ‘ll be using C. ‘re be using D. will have used

25. Nigel _____ be coming to the party.

A. won’t B. won’t not C. willn’t D. isn’t

26. I’ll try my best to spot you. What _____ wearing?

A. will you B. are you be C. will D. will you be

27. At noon tomorrow, I _____ on a beach somewhere.

A. will relax B. relax C. ‘ll be relaxing D. will being relax

28. Sorry, I can’t go with you. I _____ my daughter to work at that time.

A. will be taking B. ‘ll take C. won’t be take D. will have taken

29. This time next week we _____ round the Mediterranean.

A. will be sailing B. will sail C. will have sailed D. will be sailed

30. Alex _____ late. He’s stuck in traffic.

A. will arriving B. will be arriving C. will have arrived D. will be arrive

31. The horses will be take to the stable.

A B C D

32. The whole city will been destroyed by the next earthquake.

                 A                   B            C         D

33. The door will have be painted sooner or later.

         A                  B               C                    D

34. The new building will be show     to the tourist.

       A                           B           C          D

35. Will I be given a job with    the employer?

        A              B               C           D            

mik nghĩ là vậy thôi 

21 A 22 A 23 C 24 B 25 B 26 D 27 C 28 A 29 A 30 A 

31 B 32 C 33 B 34 B 35 C 36 C

sai thì cho mik srorry nha