1. Can they (repair) ……………… .this car? 2. He went on (talk) _____about his accident. 3. We (run)_______________out of oil in a near future. 4. It took us ages to get used to (live)……… in flats

Một thanh kim loại M hoá trị II được nhúng vào trong 1 lit dung dịch CuSO4 0,5M. Sau một thời gian lấy thanh M ra và cân lại, thấy khối lượng của thanh tăng 1,6g, nồng độ CuSO4 giảm còn bằng 0,3M. a/ Xác định kim loại M b/ Lấy thanh M có khối lượng ban đầu bằng 8,4g nhúng vào hh dung dịch chứa AgNO3 0,2M và CuSO4 0,1M. Thanh M có tan hết không? Tính khối lượng chất rắn A thu được sau phản ứng và nồng độ mol/lit các chất có trong dung dịch B (giả sử thể tích dung dịch không thay đổi)

Nêu rõ tính chất,ưu điểm,nhược điểm,cách sử dụng của bộ nhớ cấp phát động trong C++

IX. Fill in each blank with the appropriate form of the word in brackets. 1. Iceland is considered the most country in the world. (peace) 2. A lifestyle has its advantages and disadvantages. (nomad) 3. My brother has been a stamp for several years. (collect) 4. It is a/ an place to hold a picnic because it is too far from the road. (convenience) 5. Drinking water in some areas may be . (safe) 6. During my stay in the village, I was with several local farmers. (friend) 7. Encouraging children to eat and drink is very important. (health) 8. Local people in the village often wear their costumer during the festivals. (tradition) 9. Please give to that charity to help the homeless after the flood. (generous) 10. The baby slept very because the bed was really comfortable. (sound

Giải thích tại sao không nên thường xuyên đi giày cao gót?

Ai giúp mình làm bài này với khó quá

$\frac{a+b+c}{2}$ ≤ $\frac{a^3}{b^2+c^2}$+ $\frac{b^3}{c^2+a^2}$ + $\frac{c^3}{a^2+b^2}$

các bác giải giùm em bài này ạ, chi tiết cả bài nha, em cần gấp

VII. Complete the sentences with the correct verb form. 1. John adores (play) badminton in the winter 2. My father sometimes goes (hunt) in the forests. He’d like to find some more food for our family. 3. The boy (pick) up a stone and threw it in to the river. 4. He (collect) stamps from many countries since he (be) eight. 5. Which sports do you like (play)? 6. Hoa’s teacher wants her (spend) more time on math. 7. I promise I (try) my best next semester. 8. Sandra needs (improve) her English writing. 9. You should (underline) the word you want (learn) . 10. Can you help me (move) this table? 11. Nam always (get) grade A in Physics, but last semester he (get) B. 12. They were proud of (be) so successful. VIII. Fill in each blank with the appropriate form of the word in brackets. 1. There is a of books on the shelf. (collect) 2. It is very for people in remote areas to get to hospitals. (convenience) 3. He is very with his hands. (skill) 4. It is said that water collected from the local streams is to drink. (safe) 5. We want relations with all countries. (friend) 6. I like to eat , so I eat a lot of fruits and vegetables every day. (health)

giải thích tại sao 276 độ +x =360 độ mà ko phải là 176 độ +x=360 độ