Предмет: Химия, автор: uspechnay25

Основний складник яєчної шкаралупи кальцій карбонат. Обчисли масу нітратної кислоти, необхідну для РОЗЧИНЕННЯ шкаралупи 1 курячого яйця. Ураховуй, що маса кальцій карбонату в ній дорівнює 8 г.​

Ответы

Автор ответа: annatheflower
29

Відповідь:

10,08

Пояснення:

Дано:

m(CaCO3)=8г

m(HNO3)=?

Розв'язок:

CaCO3+2HNO3=Ca(NO3)2+H2O+CO2

Mr(CaCO3)=100г/моль+12+16х3=63г/моль

Пропорція:

8г-х грам

100г/моль-63г/моль

х=5.04 г- HNO3

5,04х2=10,08 г

Дайте пж дайте мені найкращу відповідь :)


solomiiasolomia: топ
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