X là hỗn hợp 2 kim loại: Mg và Fe. Để hòa tan vừa đủ 21,6 gam hỗn hợp X cần dùng 98 gam HCl. Tính khối lượng của Fe trong hỗn hợp X

Câu trả lời thì mik bít rồi mik cần giải thích chính xác nhất

B PRACTICE Exercise 1: Complete the sentences using the given words. 1. Tourists can see a wide .................... of hand-made things at the event. A. lot B. variety C. many 2. He was hired for the position because he is .................... A. reliability B. reliably C. reliable 3. There are many stores in the .................... area of the city. A. downtown B. suburb C. mountain 4. Most big companies are built and developed in .................... areas. A. urban B. rural C. mountainous 5. He wants to buy an .................... car because he doesn’t have much money. A. expensive B. affordable C. rich 6. The research on tourism was .................... by scientists at the most famous national university. A. conduction B. conductive C. conducted 7. New Zealand is one of the countries of .................... A. Oceania B. Asian C. Asian and Pacific 8. Economic .................... this year are better than those of last year. A. indicator B. indicators C. indicative Exercise 2: Complete the sentences using the given words. overcrowding packed shelter extended atmosphere 1. Many people prefer to live in the countryside rather than in big cities because of its peaceful .................... 2. Refugees and homeless people in the city need to be donated food to eat and a .................... to sleep. 3. The roads are .................... as one of the solutions to deal with traffic jams. 4. .................... in the neighborhood is one of the causes of social evils. 5. We decided to move to another restaurant because the other restaurant was .................... Exercise 3: Choose the best option to complete the sentence. 1. Of the four dresses, I like the red one .................... (better/ the best). 2. Pat’s car is (faster/ fastest) .................... than Dan’s. 3. John is (less/ the least) .................... energetic of all the men. 4. Does Fred feel (weller/ better) .................... today than he did yesterday? 5. My cat is the (prettier/ prettiest) .................... of the two. 6. This vegetable soup tastes very (good/ best) .................... 7. David is the (happier/ happiest) .................... person that we know. 8. This summery is (the better/ the best) .................... of the pair. 9. Jim has as (few/ fewer) .................... opportunities to play tennis as I do. 10. The museum is (the farther/ the farthest) .................... away of the three buildings.

Giúp mình với ạ!!!! Hứa vote 5 sao ạ

Cho ABC vuông tại A có AH là đường cao. Trên cạnh AC lấy điểm S, vẽ AT⏊BS tại T. a) Chứng minh: BHT ഗ BSC và BCT ഗ BSH. ̂̂ b) Chứng minh: 𝑇𝐻𝑆 = 𝑇𝐶𝑆.

Giải phương trình nghiệm nguyên d) $x^{2}$ + x - $y^{2}$ - 9 = 0 e ) $x^{2}$ -$y^{2}$ = 91 f )$x^{2}$ + xy - y = 2 g) $2x^{2}$ + xy + 3y = 3 h) $\frac{3}{x}$ + $\frac{3}{y}$ = 5

Cần giúp gấp thank mọi người nha

Viết câu lệnh lặp: FD 10 RT 90 FD 10 RT 90 FD 10 RT 90 FD 10 RT 90 FD 10 RT 90

Vẽ thành viên trong blackpink nha NL:có ai bt vụ jack ko

giúp mik vs ạ plsss hứa rate 5 sao