Предмет: Химия, автор: jisoo5357972

допоможіть будь ласка з хімією

Приложения:

Ответы

Автор ответа: dhrfnf08

1

Ответ:

1.

н+н+н+н.

2.

Объяснение:

нннн-с+с+о=56сон

так получілась

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