Предмет: Химия, автор: kirahomik43

10. Обчисліть масові частки (%) елементів у речовині, формула якоï Na2S2O3.​

Ответы

Автор ответа: karinamog2007
0

Ответ:

Щоб обчислити масові частки елементів у речовині, спочатку потрібно знайти молекулярну масу речовини. Для Na2S2O3:

Молекулярна маса Na (натрію) = 23 г/моль

Молекулярна маса S (сірки) = 32 г/моль

Молекулярна маса O (кисню) = 16 г/моль

Тоді молекулярна маса Na2S2O3 = 2 * 23 (Na) + 2 * 32 (S) + 3 * 16 (O) = 158 г/моль.

Тепер обчислимо масові частки:

Масова частина Na = (2 * 23 / 158) * 100% = 29.11%

Масова частина S = (2 * 32 / 158) * 100% = 40.51%

Масова частина O = (3 * 16 / 158) * 100% = 30.38%

Отже, масові частки елементів у Na2S2O3 становлять приблизно 29.11% Na, 40.51% S та 30.38% O.

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