Предмет: Химия, автор: kalekeevaasem

Какова плотность по гелию
газовой смеси, полученной смешением
таких объемов углекислого газа иметана,
в которых содержится одинаковое
количество электронов.​

Ответы

Автор ответа: Valery0210
4

Ответ:

6,1875

Объяснение:

1. Смотрим на порядковые номера элементов и суммируем их

ne(CO2)=6+2*8=22e

ne(CH4)=6+1*4=10e

Пусть мольная доля CO2 x, тогда доля метана 1-x

22*x=10*(1-x)

22*x=10

x=0,3125

Молярная масса смеси

M=χ(CO2)*M(CO2)+χ(CH4)*M(CH4)=0,3125*44+(1-0,83125)*16=24,75 г/моль

Относительная плотность по гелию

d(смесь/He)=M/M(He)=24,75/4=6,1875


Valery0210: Вы правы)
Valery0210: не исправил
Valery0210: Да, ответ получился быстрее, суть у них одинакова=)
kalekeevaasem: Спасибо Большое
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