markayla61
28.07.2021 •
Biology
Chia dung dịch X gồm các ion:
NO3-, Mg2+,3 Al +,2-SO4
thành 2 phần bằng nhau:
- Cho dung dịch BaCl2 dư vào phần 1 thu được 69,9 gam kết tủa.
- Cho dung dịch NaOH dư vào phần 2 thì lượng kết tủa lớn nhất và nhỏ nhất lần lượt
là 23,3 gam và 11,6 gam. Tính số mol của các ion trong X.
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