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nignag [31]
3 years ago
14

Bài 1. Có 30g dung dịch NaCl 20%. Tính nồng độ % dung dịch thu được khi

Chemistry
1 answer:
AlladinOne [14]3 years ago
6 0

Answer:

Bài 1. Có 30g dung dịch NaCl 20%. Tính nồng độ % dung dịch thu được khi

a. Pha thêm 20g H2O

b. Cô đặc dung dịch để chỉ còn 25g.

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