Tuyển tập 20 năm đề thi olympic 30 4 tiếng anh 11

Ngày tải lên: 07/09/2015, 11:57

Ngày tải lên: 07/09/2015, 11:58

... bang t h o n g ke sau: Thcri gian SijC Men Tir 9/1939 den 4/ 1 940 22/6/1 940 22/6/1 941 7/12/1 941 1/1/1 942 TCf 11/ 1 942 den 2/1 943 6/1 944 9/5/1 945 b Neu t i n h chat cua cuoc chien t r a n h c Neu k ... NAM O E THI OLIMPIC THANG - LICH SQ 11 Ma so: 2L- 73DH20 14 In 800 cuon, khd 16 x 24cm tai C6ng ty TNHH SX-TM Dich vu Van An Gia'y phep xuat ban so; 116 -201 4/ CXB/ 24- 25 OHQ...

Ngày tải lên: 16/07/2015, 19:53

... 0,059 (1) (2) S  2H   2e  H S K1  10  101 3 K  104 ,745 Tổ hợp (1) (2) 2Fe3  H S  2Fe2  S  2H  5 .10- 3 2,5 .10- 3 5 .10- 3  (3) K3  K12 K2  102 1,255 5 .10- 3(M) Vì K3 lớn nên phản ứng (3) ... H2S Cân (2,5 .10- 3 – x)  5,5 .10  x  x  10   2,5 .10  x  (5,5 .10- 2 + 2x) + S2- (6) K6 = K4 K5 = 10- 19,92 x 2 K6 2H+  19,92 3 → x = [S2-] = 5,2 .10- 20 Ta có:...

Ngày tải lên: 21/01/2014, 17:20

... đổi S2(S2 + δ) = 1,1 .10- 10 → S22 + δS2 – 1,1 .10- 10 =     4,4 .10 10 Chỉ chọn nghiệm dương: S2  → δ = 0,0585/58,5 = 10- 3 Vậy S2  10 3  10 3  2 .10 7  10 7 S2 giảm 100 lần so với S1 CIH2O ... 6,25 .10- 3 AgCl  Ag+ + Cl3,125 .10- 2M Ban đầu: Phản ứng: → x x Cân bằng: 3,125 .10- 2 + x x TAgCl = 10- 10 → x(3,125 .10- 2 + x) = 10- 10 x nhỏ: x  10 10  3, 2 .10 9 M 2 3,1...

Ngày tải lên: 21/01/2014, 17:20

Ngày tải lên: 15/07/2015, 18:27

Ngày tải lên: 15/07/2015, 18:28

Ngày tải lên: 15/07/2015, 18:29

... in your tea 10 .1 think he's not serious becoming a teacher He just plays the idea 11 His aunt just died, so he will come 12 first, a lot of money they couldn't make who was the plan 13 Nowadays, ... again, finding something fresh to read every time 10 Whatever the image, you'll always find the text right along side, building your understanding of the subject 20 DE THI NAM 200 1...

Ngày tải lên: 15/07/2015, 18:31

... with only one word Decision-thinking is not (1) poker - it often matters not only what you think but also what others think you think and what you think (2) think you think Interestingly poker, ... when the Cessna 20 6 Hght aircraft (5 transport) them (6 develop-) engine trouble The Danish pilot, 46-year-old Mr Carsten Peterson, (7 manage): (8 guide) the plane down on to land 20 0 yards f...

Ngày tải lên: 15/07/2015, 18:33

... o f Krakatoa 2 93 Krakatoa, (2) is a volcanic island group in Indonesia, erupted on 27' August 18 83 Not only was the explosion (3) loud that it was heard as far away (more than 3, 000 km) as Perth ... the (2) for handling it The charge for this service (3) upon the distance the letter was to be (4) For short distance, the fee was usually ten cents 31 3 A n Englishman, Roland H i l l , wa...

Ngày tải lên: 15/07/2015, 18:34

... Diamonds, which 10 The teachers have had some problems return the papers to the students A to decide when to B deciding when to C deciding D deciding when Đáp án A A A C D B D C B 10 B PART 4; ... C the own house D a house of my own Tom likes on weekends A not doing anything B to nothing C anything D doing nothing If she hadn’t overslept, she .late for the interview A wouldn’t be B ... to...

Ngày tải lên: 05/06/2015, 03:00

... Cl3,125 .10- 2M Ban đầu: Phản ứng: → x x Cân bằng: 3,125 .10- 2 + x x TAgCl = 10- 10 → x(3,125 .10- 2 + x) = 10- 10 x nhỏ: x  10 10  3, 2 .10 9 M 2 3,125 .10 [Ag+] = 3,2 .10- 9M; [NO3-] = 6,25 .10- 3M [Cl-] ... đổi S2(S2 + δ) = 1,1 .10- 10 → S22 + δS2 – 1,1 .10- 10 =     4,4 .10 10 Chỉ chọn nghiệm dương: S2  → δ = 0,0585/58,5 = 10- 3 Vậy S2  10 3  10 3  2 .10 7  10 7 S2...

Ngày tải lên: 26/04/2015, 22:38

Ngày tải lên: 22/07/2014, 06:21