August 2021 1 16 Report
1.Необходимо приготовить 250 граммов 12% - го раствора поваренной соли (NaCl).

Вычислите массы соли и воды.


2.Сколько граммов соли KNO3 и воды необходимо взять для приготовления 300

граммов раствора с массовой долей соли в нём 10%?


можно с дано пожалуйста ?​
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