Bài 2:

a) Vì khối lượng mol của N₂ và CO đều bằng 28 và lớn hơn khối lượng mol của khí metan CH₄ (28>16)

=> \(d_{\dfrac{hhX}{CH_4}}=\dfrac{28}{16}=1,75\)

Hỗn hợp X nhẹ hơn không khí (28<29)

b)

 \(M_{C_2H_4}=M_{N_2}=M_{CO}=28\left(\dfrac{g}{mol}\right)\\ \rightarrow M_{hhY}=28\left(\dfrac{g}{mol}\right)\\ d_{\dfrac{Y}{H_2}}=\dfrac{28}{2}=14\)

c) \(\%V_{NO}=100\%-\left(30\%+30\%\right)=40\%\\ \rightarrow\%n_{CH_4}=40\%\\ Vì:\%m_{CH_4}=22,377\%\\ Nên:\dfrac{30\%.16}{40\%.30+30\%.16+30\%.\left(x.14+16\right)}=22,377\%\\ \Leftrightarrow x=-0,03\)

Sao lại âm ta, để xíu anh xem lại như nào nhé. 

Bài 1:

\(a.\\ d_{\dfrac{SO_2}{O_2}}=\dfrac{64}{32}=2\\ d_{\dfrac{SO_2}{N_2}}=\dfrac{64}{28}=\dfrac{16}{7}\\ d_{\dfrac{SO_2}{SO_3}}=\dfrac{64}{80}=0,8\\ d_{\dfrac{SO_2}{CO}}=\dfrac{64}{28}=\dfrac{16}{7}\\ d_{\dfrac{SO_2}{N_2O}}=\dfrac{64}{44}=\dfrac{16}{11}\\ d_{\dfrac{SO_2}{NO_2}}=\dfrac{64}{46}=\dfrac{32}{23}\\ b.M_{hhA}=\dfrac{1.64+1.32}{1+1}=48\left(\dfrac{g}{mol}\right)\\ d_{\dfrac{hhA}{O_2}}=\dfrac{48}{32}=1,5\)

\(a,m_{H_2S}=0,4.34=13,6(g);V_{H_2S}=0,4.22,4=8,96(l)\\ m_{SO_2}=0,025.64=1,6(g);V_{SO_2}=0,025.22,4=0,56(l)\\ m_{NO}=0,22.30=6,6(g);V_{NO}=0,22.22,4=4,928(l)\)

\(b,m_{CO}=0,45.28=12,6(g);V_{H_2S}=0,45.22,4=10,08(l)\\ m_{NH_3}=0,45.17=7,65(g);V_{NH_3}=0,45.22,4=10,08(l)\\ m_{CH_4}=0,45.16=7,2(g);V_{CH_4}=0,45.22,4=10,08(l)\\ m_{CO_2}=0,45.44=19,8(g);V_{CO_2}=0,45.22,4=10,08(l)\)

\(c,m_{hh}=0,1.28+0,3.48+0,375.36,5=30,8875(g)\\ V_{hh}=22,4.(0,1+0,3+0,375_17,36(l)\\ d,n_{O_2}=\dfrac{6.10^{23}}{6.10^{23}}=1(mol)\\ \Rightarrow m_{O_2}=32(g);V_{O_2}=22,4(l)\\ n_{N_2O_5}=\dfrac{7,2.10^{23}}{6.10^{23}}=1,2(mol)\\ \Rightarrow m_{N_2O_5}=1,2.108=129,6(g);V_{N_2O_5}=26,88(l)\\ n_{CO}=\dfrac{4,5.10^{23}}{6.10^{23}}=0,75(mol)\\ \Rightarrow m_{CO}=0,75.28=21(g);V_{CO}=0,75.22,4=16,8(l)\)

a,

\(mH_2S=0,4.34=13,6\left(gam\right)\):,\(VH_2S\left(đktc\right)=22,4.0,4=8,96lít\)

 \(mSO_2=0,025.64=1,6\left(gam\right)\);\(VSO_2=22,4.0,025=0,56l\)

\(n_{O_2}=2a\left(mol\right),n_{N_2}=3a\left(mol\right),n_{SO_2}=4a\left(mol\right)\)

\(n_{hh}=2a+3a+4a=9a\left(mol\right)\)

\(\Rightarrow9a=\dfrac{5.4\cdot10^{23}}{6\cdot10^{23}}=0.9\)

\(\Rightarrow a=9\)

\(V_{hh}=0.9\cdot22.4=20.16\left(l\right)\)

\(m_{hh}=0.2\cdot32+0.3\cdot28+0.4\cdot64=40.4\left(g\right)\)

\(M_X=\dfrac{0,1.32+0,2.64}{0,1+0,2}=\dfrac{160}{3}\left(\dfrac{g}{mol}\right)\)

=> \(d_{\dfrac{X}{CH4}}=\dfrac{\dfrac{160}{3}}{16}=\dfrac{10}{3}\approx3,333\)

\(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2\left(mol\right)\)

\(n_{SO_2}=\dfrac{6,4}{64}=0,1\left(mol\right)\)

=> V_hh = (1,5 + 2,5+ 0,2 +0,1).22,4 = 96,32(l)

m_hh = 1,5.32 + 2,5.28 + 0,2.2 + 6,4 = 124,8(g)

$n_{H_2O} = \dfrac{1,2.10^{23}}{6.10^{23}} = 0,2(mol)$
$n_{SO_2} = \dfrac{6,4}{32} = 0,2(mol)$
$\Rightarrow V_{hh} = (1,5 + 2,5 + 0,2 + 0,2).22,4 = 98,56(lít)$
$\Rightarrow m_{hh} = 1,5.44 + 2,5.28 + 0,2.18 + 6,4 = 146(gam)$

\(n_{SO_2}=\dfrac{6,4}{64}=0,1mol\)

\(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2mol\)

\(\Rightarrow V_{hh}=\left(0,1+0,2+1,5+2,5\right).22,4=96,32l\)

\(m_{O_2}=1,5.32=48g\)

\(m_{N_2}=2,5.28=70g\)

\(m_{H_2}=0,2.2=0,4g\)

=> \(m_{hh}=48+70+0,4+6,4==124,8g\)

a) \(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2\left(mol\right)\); \(n_{SO_2}=\dfrac{6,4}{64}=0,1\left(mol\right)\)

V = (1,5 + 2,5 + 0,2 + 0,1).22,4 = 96,32 (l)

b) \(m_{hh}=1,5.32+2,5.28+0,2.2+6,4=124,8\left(g\right)\)