Bài tập số 1: Tìm công thức hóa học của một oxit nito, biết tỉ lệ khối lượng của nito đối với oxi là 7:16. Tìm công thức của oxit đó

hiệu hai số là 1404 , biết rằng nếu viết thêm chữ số 0 vào bên phải số bé thì được số lớn . Hai số đó là

giúp mk nhanh giải thích nx thanks nhìu 😁

ai lm xg hết và nhanh nhất sẽ đc 5 sao và ctlhn nha

mng giúp e vs e cảm ơn hứa vote 5sao ạ thk

giúp mk nhanh giải thích nx thanks nhìu 😁

tại sao quần cư nông thôn phân tán trong không gian còn quần cư thành thị phân bố tập trung

câu 1 : 2 câu thơ sau sử dụng phép tu từ gì ? nêu tác dụng của biện pháp tu từ đó ? "Người cha mái tóc bạc Đốt lửa cho anh nằm ''

VI. When going (0) ___on___ holiday, it is always a good idea to take in travel insurance. This is just in case something goes (1) _____ along the way. You could lose your luggage, you could (2) _____ robbed, or even become ill and need expensive medical treatment. For millions of holiday makers, travel insurance is just a precaution (3) _____ will help them have an enjoyable and worry-free holiday. But for some, travel insurance is a way of earning money (4) _____ making false claims against insurance companies. For (5) _____, some people pretend that they have had expensive equipment stolen which in (6) _____ never even existed, and then claim large sums of compensation. Such claims cost insurance companies a total (7) _____ £50 million per year. But the cheats’ luck is about to run out. Thanks to a new computer system, companies will (8) _____ able to tell at a glance (9) _____ someone has made a claim within the last three years. Honest travelers will no (10) _____ have to pay through the nose for other people’s dishonesty.

V. ​Every year people in many countries learn English. Some of them (1) _____ young children. (2) _____ are teenagers. Many are adults. Some learn at school. Others study by (3) _____. A few learn English just by (4) _____ to the language in film, on television, in the office or among their friends. Most people must work hard to learn English. Why do these all people (5) _____ English? It is not difficult to (6) _____ this question. Many boys and girls learn English at school (7) _____ it is one of their subjects. Many adults learn English because it is useful (8) _____ their work. Teenagers often learn English for their higher studies because some of their books are (9) _____ English at the college or university. Other people learn (10) _____ because they want to read newspapers or magazines in English.