Предмет: Химия, автор: otiotirto

Обчислiть масову частку елементу металу у натрiй гiдроксидi

Ответы

Автор ответа: dsshlss
1

Молярна маса NaOH: 23 + 16 + 1 = 40 г/моль (молекулярна формула має вагу 40 г/моль)

Молярна маса Na: 23 г/моль

Тому масова частка натрію (Na) у NaOH:

(молярная масса Na)/ (молярная масса NaOH) * 100%

молярная масса Na = (23 г/моль) / (40 г/моль) * 100%

молярная масса Na = 0,575 * 100%

масса = 57,5%

Таким чином, масова частка натрію (Na) у NaOH складає 57,5%.

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