Nung nóng déu dần một chất rắn A trong thời gian 20 phút. Nhiệt độ gây ra sự biến đổi các trạng thái của chất rắn A dược biểu thị bằng đó thị sau: a) O nhiệt độ nào thì chất A nóng chảy ? b) O nhiệt độ nào thì chất A sôi ? C) Onhiệt độ cao nhất là bao nhiêu để chất A có thể tổn tại ở trạng thái răn

Các câu hỏi liên quan

MÌNH ĐÃ CHỌN ĐÁP ÁN, MỌI NGƯỜI GIÚP MÌNH CHỮA LẠI VÀ GIẢI THÍCH DÙM MÌNH TẠI SAO LẠI CHỌN ĐÁP ÁN ĐÓ VỚI 3. He is looking forward…the result from this contest. A. receive B. receiving C. to receive (D). to receiving 4. After taking part in public activities in their community, they realized that they had been ignorant or… before. (A). narrow-minded B. large-minded C. full-minded D. thin-minded 5. A digital camera is quite…because you do not have to spend money on rolls of film. A. economic B. economical (C). economy D. economically 6. According to some psychological experts, the fact that women have to work more than men at home is one of the signs of…discrimination. A. political B. religious (C). gender D. racial 7. Taking part in social activities and interacting with different cultures widen their knowledge and gradually…them. A. nature (B). mature C. future D. picture 8. Jenifer: "How can we deal with environmental pollution?" Jessica:"……." A. Environmental pollution can be dealt with. B. We should deal with environmental. (C). We should strictly ban the disposals of chemical rubbish. D. Environmental pollution is unclean. 9. Some experts advise that student should {take advantage of} their smartphones to have fun and good learning results. The underlined word has the closest meaning to: A. take care of (B). make use of C. make fun of D. take photos of 10. Da Nang is said to be one of the best tourism…in Vietnam. (A). destinations B. destionation C. nation D. nations