$m_S = 24.0,5\% = 0,12(kg)$

$m_C = 24.(100\% - 0,5\% - 1,5\%) = 23,52(kg)$

$\Rightarrow n_S = 0,00375(kmol) = 3,75(mol)$

$n_C = 1,96(kmol) = 1960(mol)$

$C + O_2 \xrightarrow{t^o} CO_2$
$S + O_2 \xrightarrow{t^o} SO_2$

Theo PTHH : 

$n_{CO_2} = n_C = 1960(mol) ; n_{SO_2} = n_S = 3,75(mol)$

$\Rightarrow V_{CO_2} = 1960.22,4 = 43904(lít)$
$\Rightarrow V_{SO_2} = 3,75.22,4 = 84(lít)$

Đổi: 24kg = 24000g

24kg than đá có chứa 0,5% tạp chất lưu huỳnh và 1,5% tạp chất khác không cháy được

⇒ nS = 120 / 32 = 3,75 mol

mS= 0,5% . 24=0,12(kg)=120(g)

->nS= 120/32=3,75(mol)

mC=(100% - 2%). 24=23,52(kg)=23520(g)

-> nC= 23520/12=1960(mol)

PTHH: S + O2 -to-> SO2

3,75______________3,75(mol)

C + O2 -to-> CO2 

1960______1960(mol)

=> V(SO2,đktc)=3,75 x 22,4=84(l)

V(CO2,đktc)= 1960 x 22,4= 43904(l)

PT: \(C+O_2\underrightarrow{t^o}CO_2\) (1)

\(S+O_2\underrightarrow{t^o}SO_2\) (2)

Ta có: m_S = 24.0,5% = 0,12 (kg) = 120 (g) ⇒ n_S = 120/32 = 3,75 (mol)

Theo PT (2): \(n_{SO_2}=n_S=3,75\left(mol\right)\)

\(\Rightarrow V_{SO_2}=3,75.22,4=84\left(l\right)\)

Ta có: m_C = 24 - 0,12 - 24.1,5% = 23,52 (kg) = 23520 (g)

\(\Rightarrow n_C=\dfrac{23520}{12}=1960\left(mol\right)\)

Theo PT (1): \(n_{CO_2}=n_C=1960\left(mol\right)\)

\(\Rightarrow V_{CO_2}=1960.22,4=43904\left(l\right)\)

\(m_S=0,5\%.24=0,12\left(kg\right)=120\left(g\right)\\ \Rightarrow n_S=\dfrac{120}{32}=3,75\left(mol\right)\\ m_C=1,5\%.24=0,36\left(kg\right)=360\left(g\right)\\ \Rightarrow n_C=\dfrac{360}{12}=30\left(mol\right)\\ S+O_2\rightarrow\left(t^o\right)SO_2\\ C+O_2\rightarrow\left(t^o\right)CO_2\\ n_{SO_2}=n_S=3,75\left(mol\right)\\ \Rightarrow V_{SO_2\left(đktc\right)}=3,75.22,4=84\left(l\right)\\ n_{CO_2}=n_C=30\left(mol\right)\\ \Rightarrow V_{CO_2\left(đktc\right)}=22,4.30=672\left(l\right)\)

(Chắc đề là 1,5% C)

24kg = 24000g

\(m_S=24000.0,5\%=120\left(g\right)\\ n_S=\dfrac{120}{32}=3,75\left(mol\right)\\ \%C=100\%-0,5\%-1,5\%=98\%\\ m_C=24000.98\%=23520\left(g\right)\\ n_C=\dfrac{23520}{12}=1960\left(mol\right)\)

PTHH:

      S + O₂ → (t^o) SO₂

3,75     3,75          3,75

      C + O₂  → (t^o) CO₂

   1960  1960         1960

\(V_{SO_2}=22,4.3,75=84\left(l\right)\\ V_{CO_2}=22,4.1960=43904\left(l\right)\)

\(m_C=12\cdot\left(100-1.5-0.5\right)\%=11.76\left(kg\right)\)

\(n_C=\dfrac{11.76}{12}=0.98\left(kmol\right)\)

\(m_S=12\cdot0.5=6\left(kg\right)\)

\(n_S=\dfrac{6}{32}=0.1875\left(kmol\right)\)

\(S+O_2\underrightarrow{t^0}SO_2\)

\(C+O_2\underrightarrow{t^0}CO_2\)

\(V_{O_2}=\left(0.1875+0.98\right)\cdot22.4=26.152\left(kl\right)=26125\left(l\right)\)

0,5g = 0,0005 kg

\(m_C=36-0,0005-\left(36.1,5\%\right)=35,4595kg=35459,5g\)

\(n_C=\dfrac{35459,5}{12}=2954,95mol\)

\(n_S=\dfrac{0,5}{32}=0,015625mol\)

\(C+O_2\rightarrow\left(t^o\right)CO_2\)

2954,5            2954,5      ( mol )

\(S+O_2\rightarrow\left(t^o\right)SO_2\)

\(0,015625\)         \(0,015625\)         ( mol )

\(V_{CO_2}=2954,5.22,4=66180,8l\)

\(V_{SO_2}=\)\(0,015625.22,4=0,35l\)

\(1,2\ tạ = 120\ kg\\ \%C = 100\% - 0,75\% - 1,25\% = 98\% \\ C + O_2 \xrightarrow{t^o} CO_2\\ S + O_2 \xrightarrow{t^o} SO_2\\ n_{CO_2} = n_C = \dfrac{120.98\%}{12} = 9,8(kmol)\\ n_{SO_2} = n_S = \dfrac{120.0,75\%}{32} = 0,028125(kmol)\\ \Rightarrow M_A = \dfrac{9,8.44 + 0,028125.64}{9,8 + 0,028125} =44,06(g/mol)\\ d_{A/không\ khí} = \dfrac{44,06}{29} = 1,519 \)

\(\%C=100-0.75-1.25=98\%\)

\(n_C=\dfrac{1.2\cdot100}{12}\cdot98\%=9.8\left(mol\right)\)

\(n_S=0.75\%\cdot\dfrac{1.2\cdot100}{32}=0.028125\left(mol\right)\)

\(C+O_2\underrightarrow{^{t^0}}CO_2\)

\(S+O_2\underrightarrow{^{t^0}}SO_2\)

\(V_A=V_{CO_2}+V_{SO_2}=9.8\cdot22.4+0.028125\cdot22.4=220.15\left(l\right)\)

\(\overline{M}_A=\dfrac{9.8\cdot44+0.028125\cdot64}{9.8+0.028125}=44\left(g\text{/}mol\right)\)

\(d_{A\text{/}kk}=\dfrac{44}{29}=1.5\)

Đổi 1,2 tạ = 120000 g

Khối lượng S là 120000.0,075=9000 g

=> n_S=9000/32=281,25 mol

Khối lượng C là 120000.(100-0,75-1,25):100=117600 g

=> n_C=117600/12=9800 mol

PTPƯ

C                 + O₂ ---> CO₂

9800 mol -------------> 9800 mol

S                 + O₂ ---> SO₂

281,25 mol ----------> 281,25 mol

Nên V_A=(9800.22,4)+(281,25.22,4)=225820 l

Tỉ khối so với kk 

M_A/M_kk=[(12+16×2)+(32+16×2)]/29=108/29~3,72

Nên khí A nặng hơn ko khí 

B1:

\(n_C=\dfrac{96\%.14.1000}{12}=1120\left(mol\right)\\ n_S=\dfrac{2,56\%.14.1000}{32}=11,2\left(mol\right)\\ C+O_2\rightarrow\left(t^o\right)CO_2\\ S+O_2\rightarrow\left(t^o\right)SO_2\\ n_{SO_2}=n_S=11,2\left(mol\right)\\ n_{CO_2}=n_C=1120\left(mol\right)\\ V_{CO_2\left(đktc\right)}=1120.22,4=25088\left(l\right)\\ n_{SO_2\left(đktc\right)}=11,2.22,4=250,88\left(l\right)\)

B2:

\(n_{C_2H_6}=\dfrac{1,8.\left(100\%-2\%\right).1000}{22,4}=78,75\left(mol\right)\\ C_2H_6+\dfrac{7}{2}O_2\rightarrow\left(t^o\right)2CO_2+3H_2O\\ n_{O_2\left(đktc\right)}=\dfrac{7}{2}.78,75=275,625\left(mol\right)\\ V_{O_2\left(đktc\right)}=275,625.22,4=6174\left(l\right)=6,174\left(m^3\right)\)