Question

помогите пожалуйста!!!

Answer 1

Ответ:

Br2(0)

Ca(+2)O(-2)

Si(+2)O(-2)

H2(+1)C(+4)O3(-2)

Cu(+2)O(-2)

Cu2(+1)O(-2)

H2(0)

K(+1)N(+5)O3(-2)

Fe(+2)O(-2)

Fe2(+3)O3(-2)

Fe(+2)(O(-2)H(+1))2

Fe2(+3)(S(+6)O4(-2))3

N2(0)

H(+1)Cl(+7)O4(-2)