cho 20g hỗn hợp mg và fe tác dụng với dung dịch hcl du thấy có 1g khí h2 bay ra. khối lượng clorua tạo ra là bao nhiêu gam

Five students had to answer the question how are elements arranged in a periodic tabledamon: i think the elements are arranged by increasing massflo: i think the elements are arranged according to their properties sienna: i think the elements are arranged by when their discovers kyle: i think the elements are arranged according to how common they areglenda: i don't agree with any of themwho is right

Select all that apply. a beta particle: is electromagnetic energy is an electron has zero charge is emitted from the nucleus has a +2 charge has a -1 charge

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution