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ArtFox12
ArtFox12
19.02.2020 08:20 •  Химия

Знайдіть молекулярну формулу вуглеводню, якщо масова частка карбону в ньому 83.7%. відносна густина його за воднем 43

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Ответ:
dubay080p0drxr
dubay080p0drxr
24.02.2021 08:41

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Must Waste More Time...

0,0(0 оценок)
Ответ:
nikita71140
nikita71140
03.06.2020 21:19

Объяснение:

1) 2K(+)Cl(+5)O3(-2)   -> 2 K(+)Cl(-) + 3O2(0) - Q (kat)

Cl(+5) +6e = Cl(-)     2  ок-ль, в-ие

O(-2) -2e = O(0)        6  в-ль, ок-ие

ОВР, необратимая, эндотермическая, разложение, каталитическая.

2) N2(0) + O2 (0)= 2N(+2)O(-2) -Q

 N2(0)-4e = 2N(+2)  1  в-ль, ок-ие

O2(0) +4e = 2O(-2)  1  ок-ль, в-ие

ОВР, обратимая, эндотермическая, соединение, некаталитическая

3)Cu(NO3)2 + 2KOH = Cu(OH)2 + 2KNO3

Cu(+2)N(+5)O(-2) + 2K(+)O(-2)H(+) =Cu(+2)O(-2)H(+) + 2K(+)N(+5)O(-2)

Реакция ионного обмена, некаталитическая, необратимая

4) Fe(0) + H2(+)S(+6)O4 (-2)= Fe(+2)S(+6)O4(-2) + H2(0) + Q

  Fe(0)-2e = Fe(+2)   1    в-ль, ок-ие

  2H(+) +2e = H2(0)  1   ок-ль, в-ие

ОВР, замещения, необратимая, некаталитическая.

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