Tại sao không thể điều chế Al bằng phương pháp điện phân dung dịch? A. Điện phân AlCl3 tạo ra Cl2 rất độc
B. do tạo tủa Al(OH)3 bám vào bề mặt catod
C. oxy thoát ra ở anod ăn mòn điện cực grafit
D. không câu nào đúng

Which two scientific disciplines are bridged by pharmaceutical drugs? chemistry and forensics chemistry and medicine biology and forensics biology and criminology

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.

How do you know when a chemical reaction has occurred