1 hợp chất tạo bởi 1 nguyên tử nguyên tố X và 3 nguyên tử nguyên tố Clo nặng gấp phân tử Oxi bằng 4, 171875 lần. a) Tính PTK của hợp chất. b) X là nguyên tố nào, kí hiệu hóa học (Tb chi tiết các bước)

Các câu hỏi liên quan

19. 28. Do you Our solar system is in a galaxy. The galaxy is called the Milky Way.  ........................................................................................................................................................ 20. I come from a city. This city is located in the southern part of the country.  ........................................................................................................................................................ 21. Anyone must take an entrance examination. Anyone applies to that school.  ........................................................................................................................................................ 22. The boy drew pictures of people at the airport. The people were waiting for their planes.  ........................................................................................................................................................ 23. Sunlight wakes me up early in the morning. It comes through the window.  ........................................................................................................................................................ 24. Only a few of the movies are suitable for the children. The movies are shown on Channel .  ........................................................................................................................................................ 25. I was wakened by the sound of the laughter. It comes from the room next door to mine.  ........................................................................................................................................................ 26. The students have become quite proficient in their new language. They attend class five hours per day.  ........................................................................................................................................................ 27. Disney World is a famous amusement park. It is located in Orlando, Florida, USA, and covers a large area of land.