Предмет: Химия, автор: trytrua7

Обчисліть об′єм водню(н.у.) , який утвориться при розчиненні у воді літію масою 2,1 г.

Будь ласка дуже срочноооооо
даю 100 балів ​

Ответы

Автор ответа: shajtanmashina666
1

Відповідь:

пояснення на фото

Пояснення:

Приложения:

trytrua7: дуже дякую
Автор ответа: dyexfnf
1

Ответ:

Объяснение:

Дано:

m(Li) = 2,1 г

Найти: V(H2) - ?

Складемо РХР:

2,1 г                               х л

2Li + 2H2O → 2LiOH + H2

n =2 моль                     n = 1 моль

M = 7 г/моль                Vm = 22,4 л/моль

m = 14 г                         V = 22,4 л

V(Н2) = 2,1 * 22,4 : 14 = 3,36 л


trytrua7: дуже дякую
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