Nêu và giải thích hiện tượng trong các thí nghiệm sau a. Sục khí cacbonic từ từ đến dư vào dung dịch nước vôi trong
b. cho dung dịch bari clorua vào dung dịch natri sunfat
c. Nhúng 1 đinh sắt sạch vào dung dịch đồng sunfat
d. Cho vài lá đồng nhỏ vào dung dịch axit sunfuric đặc đun nóng nhẹ
e. Cho Na lần lượt vào từng dung dịch sau AlCl3 NH4Cl FeSO4 Ba(HCO3)2

This is a mixture that has the same composition throughout.

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

Which of the following is true about a carbonated soft drink? . the carbon dioxide is the solvent, and water is the solute.. the water is the solution, and carbon dioxide is the solvent.. the carbon dioxide is the solution, and the water is the solvent.. the water is the solvent, and the carbon dioxide is the solute.. .