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kpugachova2869
@kpugachova2869
July 2022
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2Artyom4
9)
а) 2C4H6 + 11O2 = 8CO2 + 6H2O
б) nCH2=CH-CH3 = [-CH2-CH2-CH2-]n
10)
Дано:
V (C2H6) = 5л
m (CaCO3) - ?
5л
2C2H6 + 7O2 = 4CO2 + 6H2O
n=2моль ⠀ ⠀ ⠀ n=4моль
V=22,4л/м
CO2 + Ca(OH)2 = CaCO3 + H2O
n=1моль ⠀ ⠀ ⠀ ⠀ n=1моль
V=22,4л/м ⠀ ⠀ ⠀ M=100г/м
1) n (C2H6) = 0,223моль
2) n (CO2) = 0,223*4/2 = 0,446моль
3) n (CO2) = 0,446*1/4 = 0,111моль
4) n (CO2) = n (CaCO3) = 0,111моль
5) m (CaCO3) = 0,111*100 = 11,1грамм
1 votes
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kpugachova2869
лучший!!!!!Спасибо!)
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Answers & Comments
а) 2C4H6 + 11O2 = 8CO2 + 6H2O
б) nCH2=CH-CH3 = [-CH2-CH2-CH2-]n
10)
Дано:
V (C2H6) = 5л
m (CaCO3) - ?
5л
2C2H6 + 7O2 = 4CO2 + 6H2O
n=2моль ⠀ ⠀ ⠀ n=4моль
V=22,4л/м
CO2 + Ca(OH)2 = CaCO3 + H2O
n=1моль ⠀ ⠀ ⠀ ⠀ n=1моль
V=22,4л/м ⠀ ⠀ ⠀ M=100г/м
1) n (C2H6) = 0,223моль
2) n (CO2) = 0,223*4/2 = 0,446моль
3) n (CO2) = 0,446*1/4 = 0,111моль
4) n (CO2) = n (CaCO3) = 0,111моль
5) m (CaCO3) = 0,111*100 = 11,1грамм