Предмет: Химия, автор: marifoster

Установіть відповідність між масовою часткою і масами розчинника і розчиненої

речовини :

1) 25г лугу і 75г води а)5%

2) 20г лугу і 380г води б)10%

3) 50г лугу і 450г води в)25%

4) 300г лугу і 700г води г)40%

Д)30%​

Ответы

Автор ответа: krosnik80
0

Ответ:

1) 25г лугу і 75г води - в) 25%

2) 20г лугу і 380г води - а) 5%

3) 50г лугу і 450г води - б) 10%

4) 300г лугу і 700г води - г) 40%

Объяснение:

Для розрахунку масової частки розчиненої речовини в розчині необхідно поділити масу розчиненої речовини на масу всього розчину і помножити на 100%.

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