Предмет: Химия, автор: nilusher2003

быстрооо пожалуйста
У этого элемента оксид имеет вид Э2 О5 Найти формулу, гидрида его, если WH= 8,8%​

Ответы

Автор ответа: dyexfnf
1

Ответ:

Объяснение:

Если высший оксид Э2О5, то это элементы 5 группы,  а их летучее соединение с водородом будет иметь формулу RH3

w(R) =  100% - 8,8% = 91,2%

Mr(Н) = 1 * 3 =3

3  -  8,8%

R  -  91,2%

R = 91,2% * 3 : 8,8% = 31

Этот елемент Фосфор(Р) - его молекулярная масса равна 31

Формула гидрата : РН3


Аноним: dyexfnf, добрий день! у меня в профиле по алгебре, 4 вопроса, можете сделать пожалуйста?
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