... → nOxi trong F = 0,7 mol → mOxi = 0,7.16 = 11,2 gam→ 2KLm∑= 40 - 11,2 = 28, 8 gam.+ Nếu 3' 8 =MM, thì ta có: 0,3.M + 0,4.M’ = 28, 8 0,3.M + 0,4.3 8 .M’ = 28, 8→ M = 64 ... lượng Fe(NO3)3 kết tinh m = 12,1 - 7,25924 = 4 ,84 (g) (0,50 đ)Đặt công thc Fe(NO3)3 . nH2OSuy ra 4 ,84 :242 ì (242 + 18n) = 8, 08 Suy ra n = 9CT Fe(NO3)3 . 9H2OGiáo viên : Phạm ... Nếu kim loại Y không tan trong axit HCl Theo pt: số mol X = 0,6 và lượng X = 10 ,8 gam nên X = 10 ,8 0,6= 18 (không có kim loại thỏa mãn)* Vậy kim loại X không tan trong axit HCl Theo pt: số...
... direction66. A. becomes B. develops C. turns D. produces67. A. Along B. With C. For D. About 68. A. match B. story C. secret D. affair69. A. of B. on C. at D. off 70. A. longest B. widest C. ... B. admired C. surprised D. startled62. A. As soon as B. As well as C. As far as D. As long as63. A. begun B. grown C. sounded D. become64. A. gaze B. attention C. breath D. control65. A. ... on sundays to church b. who go to church on sundays how many peoplec. how many people who go on sundays to church d. how many people who go to church on sundays47. If we had known your new address,...
... historians consider the ancient Dong Son Culture to be one of the defining aspects of early Vietnamese civilization.Vietnam’s population in 2006 was 84 ,402,966, with a population density of ... million A. population B. introduction C. separation D. addition2. We are really by the beauty of HueA. impression B. impress C. impreessive D. impressed3. Malaysia is divided two regions.A. ... live in or near the densely populous Red River or Mekong deltas.Due to the nation’s southward expansion throughout its history, along with the different climate and environment met by the settlers...
... anyone at night.A. convenient B. inconvenient C. convenience D. inconvenience17. What have fashion designers to modernize the Ao dai ?A. do B. did C. done D. doing. 18. The national dress of Japanese ... fadded C. fading D. faded37. In the 18 thcentury, Jean cloth was made from cotton.A. complete B. completely C. completion D. completed 38. I don’t like to wear and jeans.A. painted/ embroidering ... lines of poetry on it.A. modern B. modernize C. modernized D. modernizing41/ They have been pen pals and……………. at least once every week.a) speak b) stay c) take d) correspond.42/ I can’t...
... be sold on the sidewalk.A. They can’t sold food on the sidewalk. B. They can’t be sold food on the sidewalk.C. They can’t sell food on the sidewalk. D. They can sell food on the sidewalk.7. ... cut in this garden.A. You shouldn’t be cut the flowers in this garden. B. The flowers shouldn’t cutting the flowers in this garden.C. The flowers shouldn’t cut the flowers in this garden. D. ... the flowers in this garden. 8. When was this car bought ?A. When do they buy this car ? B. When did they bought this car ?C. When did they buy this car ? D. When are they bought this car ?9....
... D. lovely3.A. climate B. design C. region D. comic4.A. inspiration B. economic C. reputation D. dormitory5.A. entertainment B. information C. education D. televisionIII. Put the verbs in parentheses ... clearly on his own telephone. Quickly he ran to Bell’s workshop. “Mr. Bell, I heard every (8) you said!”. Watson shouted (9) Bell had finally succeeded. He had invented the first telephone. Later ... points). The TelephoneYou may use the telephone everyday but how much do you know about it? The telephone was (1) by Alexander Bell in 187 6. Bell was born in Scotland in 184 7. Later he went...
... badminton C. aerobic D. usually3. A. frequently B. gymnastic C. adjective D. difference4. A. activity B. destination C. independentD. intersection5. A. recycle B. potato C. collection D. dangerousII. ... Which underlined part is pronounced differently? (10 pts)6. A. drop B. joke C. top D. confidence7. A. ground B. found C. though D. sound 8. A. normal B. order C. oven D. origin9. A. honesty ... in at 8. 00.3.The money (steal) ……………… in the robbery was never found.4.English is essential in this job. All the telephonists speak it. If they (not know) ……………. English, they (not understand)...
... chủ 600 trong tổng số 1.2 98 xã, trongđó có 116 xã hoàn toàn giải phóng.- Các tỉnh đồng bằng ven Trung Bộ có 904 trong tổng số3 .82 9 thôn được giải phóng.- Tây nguyên có 3.200 trong tổng số ... 227. 082 người conyêu dấu gia nhập quân đội bằng 10,15% dân số toàn tỉnh.0.5+ Thóc không thi u 1 cân, quân không thi u 1 người làm trònbổn phận của hậu phương.0.5+ Nhiều phong trào thi đua ... 227. 082 ngườicon yêu dấu gia nhập quân đội bằng 10,15% dân số toàntỉnh.0.5+ Thóc không thi u 1 cân, quân không thi u 1 người làmtròn bổn phận của hậu phương.0.5+ Nhiều phong trào thi đua...
... A. impression B. adventure C. luggage D. develop7. A. purpose B. remote C. control D. respond 8. A. cultural B. industrial C. terrible D. national9. A. literature B. language C consist D. separate.10. ... you will orbit the Earth 16 times a day. Number Mistake Correction Number Mistake Correction0 on in 91 86 92 84 93 88 94 89 9590VIII. Read the passage and choose the correct answer from ... morning.A. convenience B. convenient C. conveniently D. inconveniently25. ________ does it take to get there?A. How B. How long C. How often D. How soon26. Will you join us on a ________...