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задачи на примеси

задачи

ЗадачаОтвет
В растворе сульфата натрия массой 150г содержится 27%примесей. Вычислите массу примесей в растворе. Ответ:40,5
В растворе нитрата серебра массой 360г содержится 12%примесей. Вычислите массу раствора без примесей. Ответ: 316, 8
В растворе хлорида натрия массой 1кг содержится 8% примесей. Вычислите массу примеси. Ответ:80
В растворе карбида кальция массой 83г содержится 26% примесей. Вычислите массу раствора без примесей. Ответ запишите в виде целых чисел Ответ:61
В растворе бромида калия массой 145г содержится 16%примесей. К этому раствору добавили ещё бромида калия массой 30г,в котором содержится 2% примесей. Вычислите общую массу примесей. Ответ : 23,26
Created by: Meshalkina
 

 



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