a) nH2SO4= 19,6/98=0,2(mol)

nCO2= (3.10²³)/(6.10²³)=0,5(mol)

nO2= 1,12/22,4=0,05(mol)

b) nN2=5,6/28=0,2(mol)

nO2=(1,8.10²³)/(6.10²³)=0,3 (mol)

=> V(khí đktc)=V(N2,đktc)+V(O2,đktc)=0,2.22,4+0,3.22,4=11,2(l)

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

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

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

\(\Rightarrow a=9\)

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

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

\(a.n_{CO_2}=\dfrac{4,4}{44}=0,1\left(mol\right);n_{O_2}=\dfrac{0,6.10^{23}}{6.10^{23}}=0,1\left(mol\right)\\ V_{hh}=\left(0,5+1,5+0,1+0,1\right).22,4=49,28\left(l\right)\\ b.m_{hh}=0,5.28+1,5.2+4,4+0,1.32=24,6\left(g\right)\)

a, V_{N\(_2\)} ( đktc ) = 0,5 . 22,4 = 11,2 lít

V_{H\(_2\)}  = 1,5 . 22,4 = 33,6 lít

\(n_{CO_2}=\dfrac{4,4}{44}=0,1\) ( mol )

=> \(V_{CO_2}=0,1.22,4=2,24\) ( lít )

\(n_{O_2}=\dfrac{0,6.10^{23}}{6.10^{23}}=0,1\) ( mol )

=> V_{\(O_2\)} = 0,1 .22,4 = 2,24 lít

=> V_hh = 11,2 + 33,6 + 2,24 + 2,24 = 49,28 lít

b, \(m_{N_2}=0,5.28=14\) ( g )

\(m_{H_2}=1,5.2=3\) ( g )

\(m_{CO_2}=0,1.44=4,4\) ( g )

\(m_{O_2}=0,1.32=3,2\) (g)

\(m_{hh}=14+3+4,4+3,2=24,6\) ( g )

a) Gọi số mol N₂, O₂ trong 6,72l khí A lần lượt là a, b

=> \(\left\{{}\begin{matrix}28a+32b=8,8\\a+b=\dfrac{6,72}{22,4}=0,3\end{matrix}\right.\)

=> \(\left\{{}\begin{matrix}a=0,2\left(mol\right)\\b=0,1\left(mol\right)\end{matrix}\right.\)

\(\left\{{}\begin{matrix}\%V_{N_2}=\dfrac{0,2}{0,3}.100\%=66,67\%\\\%V_{O_2}=\dfrac{0,1}{0,3}.100\%=33,33\%\end{matrix}\right.\)

\(\left\{{}\begin{matrix}\%m_{N_2}=\dfrac{28.0,2}{8,8}.100\%=63,64\%\\\%m_{O_2}=\dfrac{32.0,1}{8,8}.100\%=36,36\%\end{matrix}\right.\)

b) 

\(n_A=0,3\left(mol\right)\)

\(\Rightarrow n_{CO_2}=0,3\left(mol\right)\)

\(\Rightarrow m_{CO_2}=0,3.44=13,2\left(g\right)\)

c) 2,2g A có thể tích là 1,68 lít

=> \(V_{H_2}=1,68\left(l\right)\)

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.

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

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

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

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

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

=> 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)

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

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

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

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

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

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

=> \(m_{hh}=48+70+0,4+6,4==124,8g\)