Dẫn 4,48 lít khí NH3 đktc qua bình chứa CuO đun nóng một thời gian thu được hỗn hợp chất rắn X và hỗn hợp khí Y. biết hỗn hợp khí Y có tỉ khối với H2 là 65/7 a/ tính hiệu xuất phản ứng
b/ tính % khối lượng CuO bị khử
c/ tính khối lượng hỗn hợp X

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

The number at the end of an isotope’s name is the number.