phân tích từng giai đoạn và cho biết từng giai đoạn diễn ra hiện tượng hay hóa học khi đun nóng đường cát, đường chảy (1) .Đường chuyển sang màu vàng (2), từ màu vàng chuyển dần thành chất rắn màu đen, có vị đắng và có hơi nước thoát ra. (1) (2) (3)

What are the major products produced in the combustion of c10h22 under the following conditions? write balanced chemical equations for each. a. an excess of oxygen b. a slightly limited oxygen supply c. a very limited supply of oxygen d. the compound is burned in air

At stp, what is the volume of 1 mole of co2?

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?