... không A Trong máy quang phổ, ống chuẩn trực B Trong máy quang phổ, buống ảnh nằm có tác dụng tạo chùm tia sáng song song phía sau lăng kính C Trong máy quang phổ, lăng kính có tác D Trong máy ... Máy quang phổ tốt, chiết suất chất làm lăng kính A lớn C Biến thi n nhanh theo bước sóng ánh sáng B Càng nhỏ D Biến thi n chậm theo bước sóng ánh sáng Câu 20: Quang phổ liên tục phát A Khi nung ... sau không A Trong máy quang phổ ống chuẩn B Trong máy quang phổ buồng ảnh trực có tác dụng tạo chùm tia sáng song nằm phía sau lăng kính song C Trong máy quang phổ Lăng kính có D Trong máy quang...
... = 0,15 mol → y = 0,1 mol - Theo đlbt nguyên tố Al: 2x + y = 0,5 → x = 0,2 mol - Theo đlbt nguyên tố O: nO( Fe3O4 ) = nO( Al2O3 ) → nFe3O4 = 0,2 3/4 = 0,15 mol - Theo đlbt nguyên tố Fe: nFe = ... giúp học sinh học tốt tập sắt hợp chất sắt dự thiĐạihọcthihọc sinh giỏi cấp tỉnh, giúp học sinh xác định tốt hướng giải tốt toán sắt hợp chất sắt đểthi môn Hoá đạt điểm cao Từ khuyến khích học ... ∑ ne cho = 2.(0,15 + 0,15) = 0,6 mol - Theo đlbt mol electron: nH+ = nHNO3 = (0,6.4) : = 0,8 mol → VHNO3 = 0,8 lít Ví dụ 2: Cho 10 gam hỗn hợp Fe, Cu (trong Fe chiếm 40% khối lượng) vào dung...
... độc quyền http://baigiangtoanhoc.com Biên soạn: Tổ toán trường THPT Trần Ân Chiêm –Thanh Hóa m 1 m2 m Khóa học: Phương trình mũ logarit ôn thiđạihọc 2013 http://baigiangtoanhoc.com y ... giảng độc quyền http://baigiangtoanhoc.com Biên soạn: Tổ toán trường THPT Trần Ân Chiêm –Thanh Hóa Khóa học: Phương trình mũ logarit ôn thiđạihọc 2013 http://baigiangtoanhoc.com x 1 u ... giảng độc quyền http://baigiangtoanhoc.com Biên soạn: Tổ toán trường THPT Trần Ân Chiêm –Thanh Hóa Khóa học: Phương trình mũ logarit ôn thiđạihọc 2013 http://baigiangtoanhoc.com Với x+y=-3, ta...
... độc quyền http://baigiangtoanhoc.com Biên soạn: Tổ toán trường THPT Trần Ân Chiêm –Thanh Hóa m 1 m2 m Khóa học: Phương trình mũ logarit ôn thiđạihọc 2013 http://baigiangtoanhoc.com y ... giảng độc quyền http://baigiangtoanhoc.com Biên soạn: Tổ toán trường THPT Trần Ân Chiêm –Thanh Hóa Khóa học: Phương trình mũ logarit ôn thiđạihọc 2013 http://baigiangtoanhoc.com x 1 u ... giảng độc quyền http://baigiangtoanhoc.com Biên soạn: Tổ toán trường THPT Trần Ân Chiêm –Thanh Hóa Khóa học: Phương trình mũ logarit ôn thiđạihọc 2013 http://baigiangtoanhoc.com Với x+y=-3, ta...
... không nh t thi t phân bi t) Xét hàm s f ( t ) = t − 5t + v i t ≥ B ng bi n thi n c a hàm s f (t ) Nhìn vào b ng bi n thi n ta th y ñ h phương trình có nghi m m ≥ 22 ho c ≤m≤2 Trích t ñ thi n sinh ... + − x − ≥ (1) x+7 +3 x+2 +2 Do x ≥ nên x + ≥ x + > Suy x +1 x+6 x+2 x+6 x+6 x+2 + −x−4= − −
... alright Never mind Don’t worry about it Don’t apologize It doesn’t matter It’s OK Forget about it No harm done It’s not your fault Please don’t blame yourself Example 1: A: I apologize for the noise ... thought of: have you ever thought of giving him a tie? ANSWERS It’s a good idea Sounds great/Sounds like fun I don’t think it’s a good idea Example 1: A: I’m so bored Sitting around here makes me ... out! There’s a hole on the ground Be careful!: Be careful! The box is very heavy You’d better: You’d better no swim too far away ANSWER OK! I will/won’t Don’t worry I will/won’t Example 1: A: Don’t...
... positive adjective + Noun I ve never seen such a perfect thing on you - Your + noun + is/was + positive adjective! - You are a/an + positive adjective + complement - What (a/an) + positive adjective ... rather you didn’t D Yes, please EX2: Lili: “ ” Christina: “Please go ahead!” A Where is the post office? D Is it far from here? C Do you mind going there on foot? D Do you mind if I sit here? ... positive adjective/adverb + Subject + Verb! Đáp lại mẫu trên: - It’s very kind of you to say so, thank you! - Thank you That’s a nice compliment - Thanks I think I ve finally found (the color, the...
... hoctoancapba.com - Kho đềthi THPT quốc gia, đề kiểm tra có đáp án, tài liệu ôn thiđạihọc môn toán ĐỀ SỐ – 25 ĐỀTHI THỬ QUẢNG NINH 2015 Trong mặt phẳng với hệtọađộOxy cho hai ... (C’) : =43 0,5 hoctoancapba.com - Kho đềthi THPT quốc gia, đề kiểm tra có đáp án, tài liệu ôn thiđạihọc môn toán ĐỀ SỐ – 25 ĐỀTHI THỬ QUẢNG NINH 2015 Trong mặt phẳng với hệtọađộ Oxy, cho hình ... x y 0,25 hoctoancapba.com - Kho đềthi THPT quốc gia, đề kiểm tra có đáp án, tài liệu ôn thiđạihọc môn toán ĐỀ SỐ 11 – 25 ĐỀTHI THỬ QUẢNG NINH 2015 Trong mặt phẳng Oxy, cho tam giác...
... less clearly we see things C The higher, the less we see things clearly D The more highly, the less we see things clearly 19 The cake is delicious! Well, at least it’s the one I baked last week ... Saturday A every other B every the other C another every 32 arrived for you this morning A Some furnitures B Some furniture C Furnitures Hocmai.vn – Ngôi trư ng chung c a h c trò Vi t D identical ... levels B coats C skins D covers 32 When I was a child, I loved to splash in the………….after the rain A pools B ponds C drains D puddles 33 As the two teams left the pitch, the 100,000………gave them...
... to visit her mother Saturday A every other B every the other C another every D other every 32 arrived for you this morning A Some furnitures B Some furniture C Furnitures D Furniture Hocmai.vn ... less clearly we see things C The higher, the less we see things clearly D The more highly, the less we see things clearly 19 The cake is delicious! Well, at least it’s the one I baked last week ... levels B coats C skins D covers 32 When I was a child, I loved to splash in the………….after the rain A pools B ponds C drains D puddles 33 As the two teams left the pitch, the 100,000………gave them...
... questions 11 Either John or his wife (make / makes) breakfast each morning 12 After she had perused the material, the secretary decided that everything (was / were) in order 13 The crowd at the basketball ... wild dogs (has / have) frightened all the ducks away 15 The jury (is / are) trying to reach a decision 16 The army (has / have) eliminated this section of the training test 17 The number of students ... people at the meeting last night The committee (has / have) already reached a decision A pair of jeans (was / were) in the washing machine this morning 10 Each student (has / have) answered the first...
... student (has / have) answered the first three questions 11 Either John or his wife (make / makes) breakfast each morning 12 After she had perused the material, the secretary decided that everything ... decision 16 The army (has / have) eliminated this section of the training test 17 The number of students who have withdrawn from class this quarter (is / are) appalling 18 There (has / have) been ... in this class 19 Every elementary school teacher (has / have) to take this examination 20 Neither Jill nor her parents (has / have) seen this movie before Giáo viên: Vũ Th Mai Phương Ngu n Hocmai.vn...
... Phương 40 The police … come to the site of the accident A have B has C having 41 Every boy and girl in this room … the answer A knowing B know C knows 42 A number of students … in the exam A fail ... ng t ñ thi ñ i h c 18 There … a few flowers in this garden last summer A being B were C are D is 19 There … lots of snow in the garden A are B is C have been D to be 20 Most of us … the same ... have B has C having D to have 26 The number of pupils getting poor marks since the beginning of the semester … appalling A to be B have been C are D is 27 Five thousand pounds … stolen in the...
... t ñ thi ñ i h c 18 Whenever you … your homework, you can leave the house A finish B finished C have finish D had finish 19 She is looking for her bag because she can’t remember where she … her ... years since they last saw their parents B Their parents have seen them for five years C They last saw their parents five years ago D A & C are correct This is the first time I have lived in such ... her was a week ago A I haven’t seen her for a week B I have seen her for a week C I haven’t seen her since a week D A & B are correct They haven’t seen their parents for five years A It’s five...
... t ñ thi ñ i h c 18 Whenever you … your homework, you can leave the house A finish B finished C have finish D had finish 19 She is looking for her bag because she can’t remember where she … her ... years since they last saw their parents B Their parents have seen them for five years C They last saw their parents five years ago D A & C are correct This is the first time I have lived in such ... her was a week ago A I haven’t seen her for a week B I have seen her for a week C I haven’t seen her since a week D A & B are correct They haven’t seen their parents for five years A It’s five...
... nghĩa They last visited me five years ago A They haven’t visited me for a long time B I haven’t been visited for a long time C They haven’t visited me for five years D They have known me for five ... off the light, then he went to bed A Before Mike went to bed, he had turned off the light B Before Mike turned off the light, he had gone to bed C After Mike had gone to bed, he turned off the ... opening She was playing games while he … a football match A watched B watches C was watching She … to Ho Chi Minh city last year A goes B has gone C go 10 Water … most of the Earth’s surface A covers...
... ca canxi kim loi l 1,55 g/cm Gi thit rng, tinh th canxi cỏc nguyờn t l nhng hỡnh cu chim 74% th tớch tinh th, phn cũn li l khe rng Bỏn kớnh nguyờn t canxi tớnh theo lớ thuyt l A 0,155nm B 0,185 ... (KB-11) Phỏt biu no sau õy l sai? A Chỡ (Pb) cú ng dng ch to thit b ngn cn tia phúng x B Thic cú th dựng ph lờn b mt ca st chng g C .Trong y hc,ZnO c dựng lm thuc gim au dõy thn kinh,cha bnh eczema, ... H2O, thu c 150 ml dung dch cú pH = z Giỏ tr ca z l A B C D BI TP V AXIT HNO3 V MUI NITRAT TRONG D THI I HC THI TUYN SINH CAO NG NM 2008 Cõu 2: Nhit phõn hon ton 34,65 gam hn hp gm KNO3 v Cu(NO3)2,...
... đúng: Trong trình vật dao động điều hoà thì: A B C D Vectơ vận tốc vectơ gia tốc số Vectơ vận tốc vectơ gia tốc chiều chuyển động Vectơ vận tốc chiều chuyển động, vectơ gia tốc hướng vị trí cân Vectơ ... 0,42A D 4,2A Câu 36: Trong mạch dao động LC, lượng điện từ mạch có đặc điểm sau đây: A Biến thi n điều hoà theo thời gian B Không biến thi n theo thời gian C Biến thi n điều hoà theo thời gian với ... lượng H 23 He : A mH > mHe B mH < mHe C mH = mHe D Không so sánh Câu 31: Nguyên tử hiđrô trạng thái kích thích ứng với quỹ đạo N Tổng số vạch quang phổ mà nguyên tử phát A B C D Câu 32: Trong tượng...