Hợp chất A là oxit của kim loại có hoá trị không đổi. Trong A, kim loại chiếm 74,2% về khối lượng. Tìm công thức hoá học của A , gọi tên A và viết công thức bazơ tương ứng của A

it is a good conductor

explanation:

what is the question?

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.