Предмет: Химия, автор: niktrosh

Найдите массу соли в 300 г 16%-ного раствоа,помогите

Ответы

Автор ответа: AlexHiMiK

Дано:
m р-ра (соль) = 300 г
ω р.в. (соль) = 16% (0,16)
-----------------------------------
Найти: m р.в. (соль) - ?
Решение:
1) Найдем массу растворённого вещества соли:
m р.в. (соль) = m р-ра * ω р.в. = 300 г * 0,16 = 48 г
Ответ: m р.в. (соль) = 48 г

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