Phản ứng 2NO2 thành N2O4 có hằng số cân bằng Kp =9. Ở cùng nhiệt độ, phản ứng sẽ diễn ra theo chiều nào khi áp suất riêng phần của N2O4 và NO2 lần lượt là 0,9 atm và 0,1 atm

there all right good

explanation:

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.