Предмет: Химия, автор: finter73

Завдання 4. До розчину натрій флуориду (NaF) масою 370 г із масовою часткою натрій флуориду 25% досипали 30 г натрій флуориду. Яка масова частка натрій флуориду у новому розчині? помогите!!!

Ответы

Автор ответа: stvells

Щоб вирішити це завдання, спочатку потрібно визначити загальну масу розчину після додавання додаткової кількості NaF. Загальна маса розчину буде сумою початкової маси NaF та додаткової маси NaF:

Маса початкового NaF: 370 г
Маса додаткового NaF: 30 г

Загальна маса розчину: 370 г + 30 г = 400 г

Тепер ми можемо визначити масову частку NaF у новому розчині. Масова частка визначається як відношення маси речовини до загальної маси розчину, помножене на 100%:

Масова частка NaF = (маса NaF / загальна маса розчину) * 100%

Маса NaF: 370 г + 30 г = 400 г

Масова частка NaF = (400 г / 400 г) * 100% = 100%

Отже, масова частка NaF у новому розчині становить 100%.

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