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a/ PTK của NaCl: 23+35.5= 58.5 (đvC)
b/ PTK của Fe2O3 : 56*2 + 16*3 = 160 (đvC)
c/ PTK của Ca(OH)2 : 40+ (16+1)*2 = 74 (đvC)
d/ PTK của Al2(SO4)3 : 27*2 + ( 32+ 16*4)*3 = 342 (đvC)
M NaCl = 23+35,5=58,5 đvc
M Fe2O3 = 56.2+26.3=160 đvc
M Ca(OH)2 = 40 + (16+1).2 =74 đvc
M Al2(SO4)3 = 27.2+(32+16.4).3=342 đvc
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
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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