Cho 2,144 gam hỗn hợp A gồm Fe và Cu tác dụng với dung dịch AgNO3. Sau phản ứng xảy ra hoàn toàn thu được dung dịch B và 7,168 gam chất rắn C gồm hai kim loại. Cho dung dịch B tác dụng với dung dịch NaOH dư, lọc kết tủa nung trong không khí đến khối lượng không đổi thu được 2,56 gam chất rắn. Viết PTHH và tính khối lượng mỗi kim loại trong hỗn hợp A
Vẽ Son Goku Instinct (bản năng vô cực ) và Vegeta Ego. Vẽ 1 trong 2 nhân vật đó nếu vẽ cả hai thì đc câu trả lời hay nhất.
x/y=y/10=10/x;x+y khác -10;tìm x;y
1. My father always says that he (is/ was) very proud of me. 2. Mary told me she (will/would) visit me this summer. 3. Jim wonders whether Jane (liked/ likes) him or not. 4. My teacher (says/ said) that we had to finish our assignment on time. 5. They told me that they (are/ were) going to move their house the following month. 6. My sister said she (can/ could) win the competition if she tried her best. 7. I told Jim that he (is/ was) the most intelligent person I knew. 8. The mechanic said that it (cost/ costs) up to $50 to fix my car. 9. They (say/ said) that they would help me if they had free time. 10. Jim said that he (has just got/ had just got) a new bike.
Cho hình bình hành `ABCD`. Xác định điểm `N` thoả mãn `vec{NA}+2{NB}+2{NC}+vec{ND}=0`
Giúp mình với <chi tiết nha>
1. My younger brother is _______________. A. more and more intelligent B. much and much intelligent C. most and most intelligent D. intelligent and intelligent 2. Her brother is becoming _______________. A. more and more tall B. taller and taller C. tall and tall D. much and much tall 3. Women’s employment rate is getting ____________. A. high and high B. higher and the highest C. high and higher D. higher and higher 4. Bill is ____________. A. lazier and lazier B. more and more lazy C. lazier and more lazy D. more lazy and lazier 5. The test becomes _______ and_________. A. hard/ hard B. difficult/ difficult C. harder/ harder D. difficulty/ difficult 6. His health is getting __________and__________. A. good/ good B. better/ better C. bad/ bad D. well/ well 7. The larger the city is, ___________ the crime rate is. A. highest B. higher C. the highest D. the higher 8._______ you study for these exams, _______ you will do. A. The harder / the better B. The more / the much C. The hardest / the best D. The more hard / the more good 9. The more paper we save, ___________ preserved. A. more is wood pulp B. the more wood pulp is C. wood pulp is D. the much wood pulp is 10._______ I study for these exams, _______ I will do. A. The harder/ the better B. The more/ the much C. The hardest/ the best D. The more hard/ the more good 11. _____________ the test is, ___________ her score is. A. harder/ lower B. The harder/ the lower C. hard/ low D. The more hard/ the more low 12. _____________ my father is, ___________ I feel. A. angrier/ worse B. The more angrier/ the more worse C. angry/ bad D. The angrier/ the worse 13. _____________ she thinks of, ____________ she makes. A. idea/ post B. ideas/ posts C. The more ideas/ the more posts D. The ideas/ the posts 14. ____________ babies cry, _______________ my aunt feeds them. A. The harder/ the more quickly B. hard/ quickly C. The more harder/ the more quickly D. harder/ quicklier 15. Many students think that ______ they graduate from university, ____ chance they have to find a good job. A. The sooner/ the better B. soon/ good C. The soon/ the good D. The more soon/ the more good 16. _____________ the test is, _______________ it is to succeed. A. The more difficult/ the sweeter B. difficult/ sweet C. more difficult/ sweeter D. The more difficult/ the more sweeter 17. __________ she studies for these tests, __________ she will do. A. The harder/ the better B. The hardest/ the best C. The more/ the much D. The more hard/ the more good 18. _________ James is, _________ he falls. A. The bigger/ the hardest B. The hardest/ the biggest C. The bigger/ the harder D. The more big/ the more hard 19. _________ my sister studies, _________ she will become. A. The many/ the smarter B. The more/ the smarter C. The more/ the smartest D. The more many/ the more smart 20. ________ milk tea my elder sister dinks, ________ she becomes. A. The more/ fatter B. More/ the fatter C. The more/ the more fat D. The more/ the fatter 21. __________ this exam is, _______ Linda likes. A. The more difficult/ the more B. The difficult/ the more C. The more difficult/ the many D. The more difficult/ the many 22. _________ Mary learns, __________ she knows. A. The more/ the most B. The many/ the more C. The many/ the many D. The more/ the more 23. __________ Tom tries, _________ he succeeds. A. The more/ the most B. The many/ the more C. The many/ the many D. The more/ the more 24. ________ I love her, _______ I hate myself. A. The more/ the most B. The more/ the more C. The many/ the many D. The many/ the more CÁC BẠN GIẢI THÍCH CHI TIẾT HỘ MÌNH Ạ
Rút gọn A= $\frac{\sqrt{x-2\sqrt{2x-4}}}{\sqrt{2}}$ a) Với $\geq$ 4 b) Vời 2 $\leq$x <4 Rút gọn C= $\sqrt{x+2\sqrt{x}-1}$ - $\sqrt{x-1}$ D= 1-$\sqrt{x-2\sqrt{x-1}}$-$\sqrt{x-1}$
Giúp mình cần lời giải chi tiết
mọi người giúp em làm câu này với ạ
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến