01.04.2022

сколько электронов содержится в молекуле серной кислоты и сульфата бария?

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Химия

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сколько электронов содержится в молекуле серной кислоты и сульфата бария?

Ответ учителя по предмету Химия

Ответ:

HCl

кол-во электронов: 1 + 17 = 18

BaSO4

56 + 16 + 8*4 = 104

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Запишите в процентах десятичные дроби: 0,37; 0,856; 5,51
15-х=12 х+2=15 Уровнение решите
Написать уравнение касательной к графику функции y=f(x) в точке с абсциссой x0 если: f(x)= x^2-2x, x0=-2
решите уравнение
109208_x=68*2

помогите решить пж
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