Ta có: \(n_{CO_2}=\dfrac{11}{44}=0,25\left(mol\right)\)

\(\Rightarrow V_{CO_2}=0,25.22,4=5,6\left(l\right)\)

Bạn tham khảo nhé!

Ta có: \(n_{CO_2}=\dfrac{11}{44}=0,25\left(mol\right)\)

\(\Rightarrow V_{CO_2}=0,25.22,4=5,6\left(lít\right)\)

\(n_{Zn}=\dfrac{16,25}{65}=0,25(mol)\\ \Rightarrow n_{H_2}=0,25(mol)\\ \Rightarrow V_{H_2}=0,25.24,79=6,1975(l)\\ \Rightarrow C\)

Chọn B

\(n_{Fe_2O_3}=\dfrac{24}{160}=0,15(mol)\\ \Rightarrow n_{CO}=3n_{Fe_2O_3}=0,45(mol)\\ \Rightarrow V_{CO(25^oC,1bar)}=24,79.0,45=11,1555(l)\)

Chọn B

mik cam on bn

\(n_{hh}=\dfrac{11.2}{22.4}=0.5\left(mol\right)\)

\(n_{CH_4}=a\left(mol\right),n_{H_2}=b\left(mol\right)\)

\(\Rightarrow a+b=0.5\left(1\right)\)

\(n_{H_2O}=2a+b=\dfrac{12.6}{18}=0.7\left(mol\right)\left(2\right)\)

\(\left(1\right),\left(2\right):a=0.2,b=0.3\)

\(n_{CO_2}=n_{CH_4}=0.2\left(mol\right)\)

\(V=0.2\cdot22.4=4.48\left(l\right)\)

\(n_{CH_4}=\dfrac{2,4}{16}=0,15\left(mol\right)\)

\(\Rightarrow V_{CH_4}=0,15.22,4=3,36\left(lít\right)\)

Chọn C

18B

19C

20B

18. B

19. C

B

B

\(n_{CO_2}=\dfrac{2,4.10^{22}}{6.10^{23}}=0,04\left(mol\right)\)

20^oC, 1atm là điều kiện bình thường => V_CO2 = 0,04.24 = 0,96(l)

=> A

D