Chemistry, 20.09.2021 04:40 jenstets05

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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Bài 1. Có 30g dung dịch NaCl 20%. Tính nồng độ % dung dịch thu được khi a. Pha thêm 20g H2O
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