đề thi chọn học sinh giỏi cấp huyện yên mĩ 9

... oxi hóa hoàn toàn X phải dùng 10,08 l O2 Dẫn toàn sản phẩm sinh qua bình đựng dung dịch Ba(OH)2 17,1% phản ứng xong thấy tạo thành 49, 25 g kết tủa Tính khối lợng Ba(OH)2 dùng Câu 4(3 điểm): Cho...

Ngày tải lên: 02/07/2014, 17:00

... (m H + m Cu(OH) ) = 9, 2 + 400 - ( 0,2 + 9, 8 ) = 399 (g) %C Na SO = 14,2 100 / 399 ≈ 3,55% %CNaOH dư= 100 / 399 ≈ 2% 0,25 0,25 0,25 0,25 4 2 4 Câu 0,25 0,25 0,25 n H = 8 ,96 / 22,4 = 0,4 (mol); ... - x) 4/ 100 = 19, 2 - 0,04x (g) - Khối lượng dung dịch KCl có dung dịch sau trộn là: 0,25 x + 19, 2 - 0,04x = 0 ,96 x + 19, 2 (g) - Nồng độ % dung dịch thu là: 0,25 C% = (0 ,96 x + 19, 2) 100 / 480 ... HƯỚNG DẨN CHẤM THI CHỌN HỌC SINH GIỎI LỚP MÔN HOÁ HỌC Khoá ngày 04 tháng năm 2008 CÂU Câu Câu BÀI LÀM Cho hỗn hợp khí có lẫn tạp...

Ngày tải lên: 03/06/2013, 01:26

Ngày tải lên: 29/10/2013, 11:38

... brothers / playing soocer / beach Best wishes, Hung Họ tên : ………………………………… Class : ……… Đề Kiểm tra học sinh giỏi lớp Môn : Anh Văn I ) Listen and complete the following schedule ( 1,5 ms ) Bài ... with a suitable preposition.(7pts) 1.We often go to the concert…………weekends 2.Are you free this Sunday……… 9 o’clock 3.Daisy gives two stamped envelopes…………Mary 4.The pupils are waiting…………their ... as……………….as armchairs COMFORT 8.There is a nice TV set in my ……………room LIVE 9. Is your new school……… from your old one DIFFER 10.This is my new …………….Her name is Susan CLASS IV/ Each sentence below contains...

Ngày tải lên: 17/03/2014, 01:20

Ngày tải lên: 29/06/2014, 07:20

... nguyên tố: A: B: 8 - Cả A B nguyên tố kim loại mạnh, có 1e lớp So sánh: - B nguyên tố kim loại mạnh A Vì B có lớp electron, A có lớp electron, bán kính nguyên tử B lớn A: Lực hút hạt nhân nguyên ... 3H2SO4 → Al2(SO4)3 + 3H2 ↑ (2) Theo phương trình phản ứng theo đề ta có: 1,5a 98 27a 1,5a.2 + = 32,25 Giải được: a = 5, 09 gam 27 27 27 8 ,96 n CO = = 0,4 mol 22,4 Gọi số mol Fe2O3 x, số mol CuO y, ... là: VH2 = 0,4 22,4 = 8 ,96 lít 7,5 n H2 = = 0,334 mol 22, PTHH: 2M + 2H2O → 2MOH + H2 ↑ 2M gam mol 4 ,9 0,334 Từ phương trình phản ứng trên, ta có: 2M 4 ,9 = ⇒ M= ≈ 7,3 4 ,9 0,334 2.0,334 Vậy khối...

Ngày tải lên: 05/07/2014, 13:20

... Since about 199 0, there was a movement to create reading environments with appropriate lighting levels B C D THE END K Ỳ THI CH ỌN H ỌC SINH GI ỎI C ẤP HUY ỆN N ĂM H ỌC 2008-20 09 A M ÔN: TI ẾNG ... leave now 49 Nothing ( do) since I moved here 50 At this time next week, they (sit) in their train on their way to Paris Your answers 41 42 43 44 45 46 47 48 49 SECTION ... one: 66 We haven’t seen this quiz show for two months →The last 67 It was two years ago at the end of this week that I started working here →By the end of this week ...

Ngày tải lên: 27/07/2014, 07:20

... night with us because he was missed the last bus I …… start on my new job on Monday She …… learn to things for herself I refuse to help her in future He …… stay the night with us and tomorrow he sets ... under repair and I ……… collect it that afternoon 10 My bike is under repair and I ……… walk here this morning Question 4: Fill in each blank with one suitable word The Browns live in the countryside ... …2… Mrs Brown was most interested in stores, especially in Oxford Street, and bought some of …3… things which she could not find in the shops in the countryside Their two children, George and Susan,...

Ngày tải lên: 28/07/2014, 03:21

... a stolen car => The man is ……………………………………………………………………… We have a six o’clock deadline for this work => This work must………………………………………………………………… I had better get back to work => It’s time ………………………………………………………………………… ... teacher, taught him a few things, but Thomas was mostly self- educated His natural curiousty led him to start experimenting at a young age with electrical and mechanical things at home When he was ... _ between them , it was used by both men and women The Internet is still _ to us This book is very _ They know well the _ of learning English Going to parties can...

Ngày tải lên: 28/07/2014, 03:21

... difficult for us to _ to the Internet ? A : surf B : respond C : suffer D : get access In the 199 0s, the sale of jeans ended going A : up B : on C : over D : into All the _ were failed ... like to live in a quiet and _ village I received a lot of _ from my parents He usually thinks about his 50 years ago They like the beauty of the city and the of the people ... modernization Lao is famous for its hot _ A : industry B : area C : climate D : food He read this book last night, ? A : doesn’t he B : didn’t he C : hasn’t he D : isn’t he Are they...

Ngày tải lên: 28/07/2014, 03:21

... for Physics in 190 3 and years later she received the Nobel Prize for Chemistry Marie Curie died in 193 4 T Marie could read earlier than other children She finished high school in 1 893 She had Nobel ... B : expensive B : news B : certain B : international B : so B : in B : this B : which C : came C : ago C : popular C : things C : case C : internationly C : and C : for C : that C : what D : ... note This small dictionary 75,000 words A : makes B : uses C : comprises D : consists The mirror was _ broken A : accident B : accidently C : accidental D : by accident Is there anything...

Ngày tải lên: 28/07/2014, 03:21

... for us to think it must be enjoyable But no that it is part of every life We choose the program we watch ( 5) more carefully We remember that we have many (6) _ interesting things ... C : If D : Whether 10 You like watching sports, don’t you ? - A : Yes, I like B : I think so C : No, I hate it D : I’m the opposite 11 I suggest you should _ the windows in the ... _ Could you repeat that ? He lives in a _ house My father is the of this newspaper 10 Many people are _ in watching news COLLECT FLY COMFORT EXPLAIN WOOD EDITION...

Ngày tải lên: 28/07/2014, 03:21

... text and think of the word which best fits each space: Jack Pask and his…(1)….Dora were worried about their son Danny The boy stayed out too long, not coming home….(2)….very late at night This bad ... bottles of water,"Tam's father said "I will clean all the class windows,"said Trung "Help me to hang this picture, Ba," said Mai b) change the following sentences into passive form They have to pay ... the house …(7)… usual “I’m going to disco”, he….(8)… to his mother “There’s no need to wait up… (9) ….me” Then the front door shut with a bang ….(10)… big Danny Question 6.(1 điểm) : Rewrite following...

Ngày tải lên: 28/07/2014, 03:21

... for us to think it must be enjoyable But no that it is part of every life We choose the program we watch ( 5) more carefully We remember that we have many (6) _ interesting things ... C : If D : Whether 10 You like watching sports, don’t you ? - A : Yes, I like B : I think so C : No, I hate it D : I’m the opposite 11 I suggest you should _ the windows in the ... _ Could you repeat that ? He lives in a _ house My father is the of this newspaper 10 Many people are _ in watching news COLLECT FLY COMFORT EXPLAIN WOOD EDITION...

Ngày tải lên: 08/08/2014, 05:21

... text and think of the word which best fits each space: Jack Pask and his…(1)….Dora were worried about their son Danny The boy stayed out too long, not coming home….(2)….very late at night This bad ... bottles of water,"Tam's father said "I will clean all the class windows,"said Trung "Help me to hang this picture, Ba," said Mai b) change the following sentences into passive form They have to pay ... the house …(7)… usual “I’m going to disco”, he….(8)… to his mother “There’s no need to wait up… (9) ….me” Then the front door shut with a bang ….(10)… big Danny Question 6.(1 điểm) : Rewrite following...

Ngày tải lên: 08/08/2014, 05:21

... for Physics in 190 3 and years later she received the Nobel Prize for Chemistry Marie Curie died in 193 4 T Marie could read earlier than other children She finished high school in 1 893 She had Nobel ... B : expensive B : news B : certain B : international B : so B : in B : this B : which C : came C : ago C : popular C : things C : case C : internationly C : and C : for C : that C : what D : ... note This small dictionary 75,000 words A : makes B : uses C : comprises D : consists The mirror was _ broken A : accident B : accidently C : accidental D : by accident Is there anything...

Ngày tải lên: 08/08/2014, 05:21

... nghĩa câu không thay đổi 96 Gary is the best guitarist in the class  No one else …………… 97 Lan was sick but she still went to class yesterday  Despite ……………… 98 People think that doing morning ... keep a secret Never again her anything A will tell B will I tell C I tell D I will tell 38 breakfast is the first meal of the day A The B A C This D 39 We had a good time last summer A ... by someone 43 This is the first time I _ this Shakespeare’s novel A read B have read C reading D to read 44 No one has ever asked me that question before In the passive voice, this should be...

Ngày tải lên: 08/08/2014, 05:21

... UBND HUYỆN NGỌC HỒI PHÒNG GIÁO DỤC VÀ ĐÀO TẠO ĐỀ CHÍNH THỨC HƯỚNG DẪN CHẤM KỲ THI CHỌN HỌC SINH GIỎI CẤP HUYỆN LỚP NĂM HỌC 2012-2013 Môn: Sinh Khóa thi ngày: 24/01/2013 Thời ... trùng Y nhỏ, nhẹ tinh trùng X, tốc độ di chuyên rnhanh Vì hợp tử XY tạo với xác suất cao (0.5đ) + Khi sinh tỉ lệ bé trai bị chết non nhiều bé gái (do sức đề kháng kém) đến tỉ lệ trai: Câu a.Bệnh ... mộtcủa Protein Protein trực tiếp tham gia vào cấu trúc hoạt động sinh lý tế bào, từ biểu thành tính trạng thể Câu Trình bày chế sinh trai gái Giải thích -Trình bày chế viết sơ đồ minh họa (1 đ)...

Ngày tải lên: 08/07/2015, 09:24

... THE END UBND HUYỆN NGỌC HỒI PHÒNG GIÁO DỤC VÀ ĐÀO TẠO ĐỀ CHÍNH THỨC HƯỚNG DẪN CHẤM KỲ THI CHỌN HỌC SINH GIỎI CẤP HUYỆN LỚP NĂM HỌC 2012-2013 Môn: Anh văn Khóa thi ngày: 24/01/2013 Thời ... …………………………………………………………………………………………………… Whose handbag is this? ( BELONG) ………………………………………………………………………………………………… ? She has never seen a more unusual festival than this one ( MOST ) …………………………………………………………………………………………………… ... how to go to the station Mrs Chi advised me not to lend him any more money Who does this handbag belong to? This is the most unusual festival she has ever seen VI 20 điểm ( câu điểm) Can / Could...

Ngày tải lên: 08/07/2015, 09:25

... UBND HUYỆN NGỌC HỒI PHÒNG GIÁO DỤC VÀ ĐÀO TẠO HƯỚNG DẪN CHẤM CHÍNH THỨC KỲ THI CHỌN HỌC SINH GIỎI CẤP HUYỆN LỚP NĂM HỌC 2012-2013 MÔN: TOÁN BÀI ĐÁP ÁN a/ A ... a/ Nối HD, HE thì: Góc BDH = 90 0; góc CEH = 90 0 Áp dụng hệ thức b2 = ab’ ta được; AD.AB = AE.AC (= AH2) Tứ giác AEHD hình chữ nhật ˆ ˆ ˆ ˆ Góc IDE = D 1+ D = H + H = 90 0 Suy ID ⊥ DE nên DE tiếp ... ⇔  2v − 3u =   v=      x −1 = x=3   ⇒ ⇔   y = 19 =  y −    x=3  Vậy với m = 1, hệ phương trình có nghiệm  19 y =   b/ Từ (1) ⇒ u = − mv Thế vào (2) ta có: 2v − 6m +...

Ngày tải lên: 08/07/2015, 09:26