->mNO2 = 0,25.46=11,5g
->VNO2 = o,25.22,4=5.6 lít

\(a_1,m_{CaCO_3}=0,25.100=25(g)\\ a_2,m_{SO_2}=\dfrac{3,36}{22,4}.64=9,6(g)\\ a_3,m_{H_2SO_4}=\dfrac{9.10^{23}}{6.10^{23}}.98=147(g)\)

a) 

\(n_{SO_2}=\dfrac{m}{M}=\dfrac{3,2}{64}=0,05\left(mol\right)\\ n_{CO_2}=\dfrac{V_{\left(\text{đ}ktc\right)}}{22,4}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\)

b) 

\(n_{Cl_2}=\dfrac{V_{\left(\text{đ}ktc\right)}}{22,4}=\dfrac{1,344}{22,4}=0,06\left(mol\right)\Rightarrow m_{Cl_2}=n.M=0,06.71=4,26\left(mol\right)\\ n_{Na_2CO_3}=n.M=0,5.106=53\left(g\right)\)

c) 

\(V_{N_2\left(\text{đ}ktc\right)}=n.22,4=0,25.22,4=5,6\left(l\right)\\ n_{O_2}=\dfrac{m}{M}=\dfrac{4,8}{32}=0,15\left(mol\right)\Rightarrow V_{O_2\left(\text{đ}ktc\right)}=n.22,4=0,15.22,4=3,36\left(l\right)\)

mMg = 0,5.24 = 12 gam

V_SO2 = n.22,4 = 0,25.22,4 = 5,6 lít

nN₂ = \(\dfrac{16,8}{22,4}\)= 0,75 mol , nO₂ = \(\dfrac{5,6}{22,4}\)= 0,25 mol

=> m(N₂  + O₂ ) = 0,75.28 + 0,25.32 = 29 gam

Gọi hỗn là: A

* Thể tích hỗn hợp khí A là: 

         V_A = ( 0.25 + 0.5 ) . 22,4 

               = 16.8 lít

* m_SO3 = 0,25 . 96 = 24g

  m_CO = 0,5 . 28 = 14g

    ⇒ Khối lượng của hỗn hợp khí A là: 

 m_A = 24g + 14g = 38g

\(a.\)

\(m_{hh}=0.12\cdot90+0.15\cdot58=19.5\left(g\right)\)

\(b.\)

\(V_{hh}=\left(0.25+0.1+0.05\right)\cdot22.4=8.96\left(l\right)\)

\(c.\)

\(n_A=\dfrac{10.08}{22.4}=0.45\left(mol\right)\)

\(M_A=23\cdot2=46\left(\dfrac{g}{mol}\right)\)

\(m_A=0.45\cdot46=20.7\left(g\right)\)

\(d.\)

\(n_{hh}=\dfrac{6.72}{22.4}=0.3\left(mol\right)\)

Vì CO₂ : O₂ = 2 : 1 

\(\Rightarrow n_{CO_2}=0.2\left(mol\right),n_{O_2}=0.1\left(mol\right)\)

\(m_{hh}=0.2\cdot44+0.1\cdot32=12\left(g\right)\)

\(\overline{M}=\dfrac{12}{0.3}=40\left(\dfrac{g}{mol}\right)\)

M C H 4  = 12 + 4 = 16 g/mol

m C H 4 = n C H 4 . M C H 4  = 0,25.16 = 4(g)

m O 2 = n O 2 . M O 2  = 0,25.32 = 8(g)

m H 2 = n H 2 . M H 2  = 0,25. 2 = 0,5(g)

M C O 2  = 12 + 16.2 = 44 g/mol

m C O 2 = n C O 2 . M C O 2 = 0,25.44 = 11(g)

Ở đktc 0,25 mol của các chất khí đều có thể tích bằng nhau:

V C H 4 = V O 2 = V H 2 = V C O 2 = 22 , 4 . 0 , 25 = 5 , 6   ( l )

1. \(n_{NO_2}=\dfrac{49,58}{22,4}\approx2,21\left(mol\right)\)

2.\(m_{CaCO_3}=0,125.104=13\left(g\right)\)

3.\(n_{CH_4}=\dfrac{m}{M}=\dfrac{8}{16}=0,5\left(mol\right)\\ V_{CH_4}=8.22,4=179,2\left(l\right)\)