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
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Ответ:
fhdne fjdjdjfnnxnd ddkkddkjxf
Ответ:
Nói tiếng anh po
Explanation:
uhmm A. tôi nghĩ
Ответ: