1.

\(a,n_{Al}=\dfrac{5,4}{27}=0,2(mol)\\ n_{CuO}=\dfrac{8}{80}=0,1(mol)\\ n_{Fe_2O_3}=\dfrac{16}{160}=0,1(mol)\\ b,V_{CO_2}=0,25.22,4=5,6(l)\\ V_{H_2}=0,175.22,4=3,92(l)\\ V_{N_2}=1,5.22,4=33,6(l)\)

2.

\(a,n_{Al}=0,5.2=1(mol);n_{O}=0,5.3=1,5(mol)\\ \Rightarrow m_{Al}=1.27=27(g);m_{O}=1,5.16=24(g)\\ b,n_{CO_2}=\dfrac{2,2}{44}=0,05(mol)\\ \Rightarrow m_C=0,05.12=0,6(g);m_O=0,05.2.16=1,6(g)\)

nX = 0,672/22,4 = 0,03 (mol)

Gọi nN2 = a (mol); nO2 = b (mol)

a + b = 0,03

28a + 32b = 0,88 

=> a = 0,02 (mol); b = 0,01 (mol)

%VN2 = 0,02/0,03 = 66,66%

%VO2 = 100% - 66,66% = 33,34%

M(X) = 0,88/0,03 = 88/3 (g/mol)

nX = 2,2 : 88/3 = 0,075 (mol)

VH2 = VX = 0,075 . 22,4 = 1,68 (l)

a.

\(V_{H_2S}=0.75\cdot22.4=16.8\left(l\right)\)

\(V_{SO_2}=\dfrac{12.8}{64}\cdot22.4=4.48\left(l\right)\)

\(V_{O_2}=\dfrac{3.2}{32}\cdot22.4=2.24\left(l\right)\)

b.

\(n_{hh}=\dfrac{22}{44}+\dfrac{3.55}{71}+\dfrac{0.14}{28}=0.555\left(mol\right)\)

\(V_{hh}=0.555\cdot22.4=12.432\left(l\right)\)

nSO₂=m:M=6,4:64=0,1(mol)

VSO₂=n.22,4=0,1.22,4=2,24(l)

nCO₂=m:M=4,4:44=0,1(mol)

VCO₂=n.22,4=0,1.22,4=2,24(l)

nH₂=S:6.10²³=1,2.10²³:6.10²³=0,2(mol)

VH₂=n.22,4=0,2.22,4=4,48(l)

\(a.n_{SO_2}=\dfrac{m}{M}=\dfrac{6,4}{64}=0,1\left(mol\right)\\ n_{CO_2}=\dfrac{m}{M}=\dfrac{4,4}{44}=0,1\left(mol\right)\\ \Rightarrow n_{hh}=n_{SO_2}+n_{CO_2}=0,1+0,1=0,2\left(mol\right)\\ \Rightarrow V_{hh}=n.22,4=0,2.22,4=4,48\left(l\right)\)

\(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2\left(mol\right)\Rightarrow V_{H_2}=n.22,4=0,2.22,4=4,48\left(l\right)\)

a/ n_CO2 = 2,2 / 44 = 0,05 (mol)

=> V_CO2(đktc) = 0,05 x 22,4 = 1,12 lít

b/ n_Cl2 = 4,48 / 22,4 = 0,2 (mol)

=> m_Cl2 = 0,2 x 71 = 14,2 gam

c/ n_H2 = 0,5 / 2 = 0,25 (mol)

n_N2 = 14 / 28 = 0,5 (mol)

=> V_{hỗn hợp} = ( 0,25 + 0,5 ) x 22,4 = 16,8 lít

\(n_{H_2O}=\dfrac{3,6}{18}=0,2mol\)

\(n_{CO_2}=\dfrac{3,36}{22,4}=0,15mol\)

\(n_A=\dfrac{2,2}{44}=0,05mol\)

Số nguyên tử C:

\(\overline{C}=\dfrac{n_{CO_2}}{n_A}=\dfrac{0,15}{0,05}=3\)

Số nguyên tử H:

\(\overline{H}=\dfrac{2n_{H_2O}}{n_A}=\dfrac{2\cdot0,2}{0,05}=8\)

Vậy CTHH là \(C_3H_8\)

nH2O=3,618=0,2(mol)

Bảo toán C: n_C(A) = 0,15 (mol)

Bảo toàn H: n_H(A) = 0,2.2 = 0,4 (mol)

=> 

Gọi CTHH của khí X là $RO_3$

Ta có:  

\(M_{RO_3}=R+48=\dfrac{16}{\dfrac{4,4}{44}.2}=80\Rightarrow R=32\left(S\right)\)

Vậy CTHH khí X là $SO_3$

a) \(n_{N_2O}=\dfrac{3,3}{44}=0,075\left(mol\right)\)

=> \(V_{N_2O}=0,075.22,4=1,68\left(l\right)\)

\(n_{CO_2}=\dfrac{95,48}{44}=2,17\left(mol\right)\)

=> \(V_{CO_2}=2,17.22,4=48,608\left(l\right)\)

\(n_{SO_2}=0,5\left(mol\right)\)

=> \(V_{SO_2}=0,5.22,4=11,2\left(l\right)\)

b) \(n_{CO_2}=0,08\left(mol\right)\)

\(n_{NH_3}=0,09\left(mol\right)\)

=> \(V_{hh}=\left(0,08+0,09\right).22,4=3,808\left(l\right)\)

c) \(n_{CO_2}=\dfrac{0,88}{44}=0,02\left(mol\right)\)

\(n_{NH_3}=\dfrac{0,68}{17}=0,04\left(mol\right)\)

=> \(V_{hh}=\left(0,02+0,04\right).22,4=1,344\left(l\right)\)

:Hãy cho biết thể tích khí ở đktc của: a)3,3 g N2O; 95,48 g CO2; 0,5 N phân tử SO2.

n _N2O=\(\dfrac{3,3}{44}=0,075mol\)

=>V_N2O=0,075.22,4=1,68l

n _CO2=\(\dfrac{95,48}{44}\)=2,17mol

=>V_CO2=2,17.22,4=48,608l
nSO2=0,5N6N=112(mol)

n _SO2=\(\dfrac{0,5N}{6N}=\dfrac{1}{12}mol\)

=>V_SO2=\(\dfrac{1}{12}.22,4=\dfrac{28}{35}\)mol

b)Hỗn hợp khí gồm: 0,08 N phân tử CO2; 0,09 N phân tử NH3. c)Hỗn hợp khí gồm: 0,88 g CO2; 0,68 g NH3.

=>n _hh=\(\dfrac{0,08N}{6N}+\dfrac{0,09N}{6N}=\dfrac{17}{600}N\)

=>V_{hhCO2, NH3}=\(\dfrac{17}{600}.22,4=\dfrac{238}{375}l\)

->n_hh=\(\dfrac{0,88}{44}+\dfrac{0,68}{17}=0,06mol\)

=>V_{hhCO2, NH3}=0,06.22,4=1,344l