Предмет: Химия, автор: АлексееваBelo4ka

скольго грамм сажи можно получить при полном разложении 44,2 л этана

Ответы

Автор ответа: IRockFanI

1) C₂H₆→2C+3H₂↑

n(C₂H₆)=V/Vm (Vm - молярный объём)
n(C₂H₆)=44,2/22,4≈1,97 моль (с округлением)

2) C₂H₆ → 2C+3H₂↑
1,97 моль x моль
1 моль 2 моль

x=(1,97*2)/1=3,94 моль (C)

3) m=n*M
m(C)=3,94*12=47,28 г
Ответ: m(C)=47,28 г
Возможно, получится немного другой ответ, если вычисленное количество вещества этана (n) округлить до целых...

Автор ответа: shakha2017

44.8 X
C2H6=2C+3H2
22.4 24
X=24*44.8/22.4=48 ГРАММ САЖА

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Вот текст:The role of technical progress
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