Предмет: Химия, автор: NDV

Люди СРОЧНО!!! решите карточку пожалуйста. Карточка во вложениях

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Ответы

Автор ответа: maftun
0

Вариант 1

1)  О-обозначение элемента

относительная атомная масса-16

атомный номер-8

2)  Са(кальций),S(сера)

2Са+О2=2СаО

S+O2=SO2

3)кислород применяется в процессах:

    1) производства чугуна и стали

    2) конвертерное производства стали

    3) электросталиплавильное производство

    4) кислородное дутье в доменных печах

    5)производства ферросплавов

    6)прямое восстановление железа

    7) выплавка никеля,свинца,цинка,циркония и других цветных металлов

ВАРИАНТ 2

1) F+9     )2)7

2) F,CL,Br,I

3)

    1)Br2+H2=2HBr

    2)HBr+AgNO3=AgBr+HNO3

4)Дано:

v(CL)=0,5моль

Vm=22,4литр/моль

V=?

Решение:

V=v*Vm=0,5моль*22,4литр/моль=0,02литр

Ответ:о,02литр

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