hoc sinh gioi anh 9 tinh hung yen 14 15

... (mol); nCuO=kz (mol) 0,15mol X Ta có k(x + y + z) = 0 ,15 (III) 2kx + 8ky + 2kz = 0,45 (IV) Giải hệ gồm (I), (II), (III) (IV) ⇒ x=0,15mol; y=0,05mol; z=0,1mol %nMgO = (2,0đ) 0 ,15 0,3 100 = 50,00(%); ... 0,05mol) - nCO2 = nCaCO3 = 0,015mol ⇒ nC = 0,015mol ⇒ nO (CO2) = 0, 015. 2 = 0,03mol ⇒ nO(H2O) = 0,05 – 0,03 = 0,02mol ⇒ nH = 2nH2O = 2.0,02 = 0,04mol * Lập tỉ lệ x:y = 0, 015: 0,04 = 3:8 ⇒ CTPT dạng ... S=32; Cl=35,5 Lưu ý: Thí sinh phép sử dụng bảng tuần hoàn làm Chữ ký giám thị 1: Chữ ký giám thị 2: HƯỚNG DẪN CHẤM VÀ CHO ĐIỂM BÀI THI THÍ SINH (LỚP THCS 10_04_20 09) STT Câu 1.a (1,0đ)...

Ngày tải lên: 06/09/2013, 10:10

... away from home 13,It is impossible 14, Every time we rang, there wasn’t any answer 14, There was when 15, Bill behaved kindly to me 15, Bill was 16, I am sorry that I didn’t ... convenience reputation 14 fashionable develop 15 major communicate 16 comfortable invent 17 favorite entertain 18 different limitation 19 fame express 20 economy ... deal of traffic (strong) 14 We have decided to interview only the best six for the job (apply) 15 Dozens of are injured on the city’s roads each year (cycle) 15 Motor- racing is an extremely...

Ngày tải lên: 30/06/2013, 01:27

Ngày tải lên: 04/08/2013, 01:26

... priceless Many of the library’s treasures were lost forever - some books were (14) ……… recovered We can not even know (15) ……… exactly the library contained III.Read the text below and decide which ... about the problem We must act now before it is too late to (14) ……… about it Join us now Save the earth This is too important to (15) ……… A.very B too C much D enough A unfit B inappropriate ... die B preserve C survive D continue 13 A discuss B talk C solve D decide 14 A nothing B everything C something D anything 15 A B make C ignore D realize PART C : WRITING I.Use between two and five...

Ngày tải lên: 19/08/2013, 07:10

... who drank four cups of coffee a day performed more (14) ……… all day than those who drank less he suggested that sensible employers should (15) ……… out free coffee or tea A bowl B pan C saucer ... skill B ability C power D strength 13 A farther B further C another D longer 14 A well B better C profitably D efficiently 15 A put B.get C give D throw II.Read the passage and answer the questions ... those who ate other foods or had (8) ……… breakfast Ealier research had shown that people whose (9) …… performance was measured (10) …… after eating breakfast of any kind performed 10 percent better...

Ngày tải lên: 20/08/2013, 02:10

Ngày tải lên: 20/08/2013, 08:10

... about 18 months ago, we came back to England It’s difficult here I feel I am living in the 194 0s, not the 199 0s (2) _, so it is entirely different from Singapore It’s too quiet I am used to the noise ... won’t be…… until tomorrow We have had change the brakes A available B ready C completed D present 19 ……… Mount Everest is ……… highest peak of …… Himalayas A A – the – x B X- the – the C X – at –...

Ngày tải lên: 21/01/2014, 23:20

... sinh cần trình bày vấn đề sau: Niên biểu kiện Chiến tranh giới thứ hai ( 193 9 - 194 5): Thời gian Ngày 1 /9/ 193 9 Ngày 22/6/ 194 1 Ngày 7/12/ 194 1 Ngày 9/ 194 0 Tháng 1/ 194 2 Tháng 2/2/ 194 3 Ngày 8/8/ 194 5 ... Quốc năm 191 9- 192 5: * Nguyễn Ái Quốc Pháp ( 191 7- 192 3): - Tháng 6/ 191 9, Nguyễn Ái Quốc gửi tới Hội nghị Véc - xai yêu sách đòi quyền tự do, dân chủ cho nhân dân Việt Nam - Tháng 7/ 192 0, Nguyễn ... Tháng 2/2/ 194 3 Ngày 8/8/ 194 5 Đêm mồng rạng sáng ngày 9/ 5/ 194 5 Ngày 9/ 8/ 194 5 Ngày 15/ 08/ 194 5 Tên kiện Phát xít Đức công Ba Lan Mở đầu Chiến tranh giới II Phát xít Đức công Liên Xô Nhật Bản công...

Ngày tải lên: 22/06/2014, 02:20

... (0,30 x 36 = 10,80) D A B A C C A C B 10 C III Reading: 11 12 13 14 15 16 17 18 19 20 D B D A B B C C D D 21 22 23 24 25 26 27 28 29 30 B B B B D B D C B B 31 32 33 34 35 36 D B D C B C IV (0,30 ... sprice / chocolate bar / be / twenty pence / We / go / as / plan / and / stay / month Last / summer / friend / Charles / invite / me / stay / him The end I Phonetics I (0 ,15 x = ... its descent A customers B Riders C flyers D passengers 14 Both viruses and genes……… made from nucleoproteins A Are B Is C Were D Has been 15 Little……….what is in store for him A He knows B does...

Ngày tải lên: 01/07/2014, 10:20

... years old 87 They don’t allow us smoke here 88 It was a quietly morning 89 They have the poster to carry their laggage 90 We were made learning fifty new words every week VI Hãy cho từ loại từ ... dai have taken _ from Vietnam’s ethnic monitory A poetry B inspiration C material D thinking 29 That was a ceremony A prepared-well B well-prepared C prepare-well D well-prepare 30 How wide ... swim to study B going for a swim to studying C go for a swim to studying D go for a swim to study 39 The fewer bag you take, trouble you will have on route A the fewer B the little C the less...

Ngày tải lên: 01/07/2014, 22:20

... OH)-CH(NHz)-COOH 2, 09 9,10 Axit aspatic, HOOC-CHz-CH(NH2)-COOH 1 ,99 3 ,90 2,20 9, 11 ,.,,Tyrozin, p-HO-C6H4-CHz-· CH(NHz)-COOH - -~- 5,60 - - ~ ~ (3,0 ag - 10,00 3 ,90 10,07 10,07 '- diella) ... viSt cong th(rc B lli111ugt tac Fisher, gQi san phftn1 t1;lO dU '9' cphep d1.Jng13dl1gtudnhoiinVdina)ltinhcdmtay (theo danh mljC may tinhB(J GD&DT cho phep dljngtrong cacki thi qu6c gia) HQ va ten ... va tinhthanh phlin phlin h6n hQ'~ X.' (3,0 diSm) ~ au Hai hQ'Pchfit hUll co da chuc A va B d~u co cong thuc phan tu CSH604 va Ia dbng phan l?p thS cua Ca A, B d~u khong co Hnh quanw 49: ,1t,...

Ngày tải lên: 01/07/2014, 23:20

... younger brother is too weak to lift that box Your brother is not 10 Hungs hobby is collecting stamps Hung is interested III: Use the given words to make complete sentences ... hoàn thành câu sau (1,5 điểm) Mỗi lựa chọn đợc 0,1 điểm B D C D B A A A B 10 A 11 B 12 D 13 B 14 C 15 C II Cho dạng động từ ngoặc (1,0 điểm) Mỗi động từ chia đợc 0,1 điểm is playing visited, was ... Where does there refer to? A In the United States B In Cuba C In Japan D In Cuba, Mauritius and Hungary PART D: WRITING I Choose the underlined word or phrase that needs correcting Would you like...

Ngày tải lên: 08/08/2014, 15:53

... accused B complained C blamed D charged 14 Mrs Lan stopped …… her letter because she had to leave for the hospital A to wrote B write C writing D wrote 15 It’s high time Jack ……some work for his ... in B at C with D on 14 One of the policemen was killed ……………… a knife A with B by C in D on Doan Thi Diem Secondary School English Name: ……………………… Class: …… Progress Tests 15 It is only ……………… ... she has ever eaten TASTY Kitchens can, of course, be (8) … .… places and the absolute DANGER (9) … .… of keeping an eye on children at all times cannot be IMPORTANT emphasized too (10) … …...

Ngày tải lên: 31/10/2014, 10:36