\(a,m_C=10.36\%=3,6\left(kg\right)=3600\left(g\right)\\ n_C=\dfrac{3600}{12}=300\left(mol\right)\\ m_S=10-3,6=6,4\left(kg\right)=6400\left(g\right)\\ n_S=\dfrac{6400}{32}=200\left(mol\right)\\ C+O_2\rightarrow\left(t^o\right)CO_2\\ S+O_2\rightarrow\left(t^o\right)SO_2\\ n_{O_2\left(tổng\right)}=n_C+n_S=300+200=500\left(mol\right)\\ V_{O_2\left(tổng\right)\left(đktc\right)}=500.22,4=11200\left(l\right)\\ V_{kk}=\dfrac{100}{20}V_{O_2\left(tổng\right)\left(đktc\right)}=5.11200=56000\left(l\right)\\ b,V_{hh\left(CO_2,SO_2\left(đktc\right)\right)}=22,4.\left(n_C+n_S\right)=22,4.\left(300+200\right)=11200\left(l\right)\)

Coi \(n_{hỗn\ hợp} = 1(mol)\)

Suy ra : \(n_A = 1.25\% = 0,25(mol) ; n_{CO_2} = 0,75(mol)\)

Trong đó, CO₂ chiếm 82,5% về khối lượng :

\(\%m_{CO_2} = \dfrac{0,75.44}{0,75.44 + 0,25A}.100\% = 82,5\%\\ \Rightarrow A = 28(đvC)\)

CTHH của 3 chất có PTK như trên : \(N_2 , C_2H_4 , CO\)

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\(m_{Fe_2O_3}=\dfrac{80\cdot50}{100}=40\left(g\right)\)

\(m_{CuO}=50-40=10\left(g\right)\)

\(n_{Fe_2O_3}=\dfrac{40}{160}=0.25\left(mol\right)\)

\(n_{CuO}=\dfrac{10}{80}=0.125\left(mol\right)\)

\(Fe_2O_3+3H_2\underrightarrow{t^0}2Fe+3H_2O\)

\(CuO+H_2\underrightarrow{t^0}Cu+H_2O\)

\(n_{H_2}=3\cdot0.25+0.125=0.875\left(mol\right)\)

\(V_{H_2}=0.875\cdot22.4=19.6\left(l\right)\)

Chúc bạn học tốt <3 

\(a,n_{Al}=\dfrac{19,2\%.27,8}{27}=\dfrac{1112}{5625}\left(mol\right)\\ n_{Fe}=\dfrac{\left(100\%-19,2\%\right).27,8}{56}=\dfrac{14039}{35000}\left(mol\right)\\ 4Al+3O_2\rightarrow\left(t^o\right)2Al_2O_3\\ 3Fe+2O_2\rightarrow\left(t^o\right)Fe_3O_4\\ n_{O_2\left(tổng\right)}=\dfrac{1112}{5625}.0,75+\dfrac{2}{3}.\dfrac{14039}{35000}\approx0,4156762\left(mol\right)\\ V_{kk\left(đktc\right)}\approx0,4156762.5.22,4\approx46,5557344\left(l\right)\\ b,n_{Al_2O_3}=\dfrac{\dfrac{1112}{5625}}{2}=\dfrac{556}{5625}\left(mol\right)\\ n_{Fe_3O_4}=\dfrac{\dfrac{14039}{35000}}{3}=\dfrac{14039}{105000}\left(mol\right)\\ m_{rắn}=\dfrac{14039}{105000}.232+\dfrac{556}{5625}.102=41,1016381\left(g\right)\)

Fe hóa trị mấy để tạo ra h/c

\(m_{Fe}=32.70\%=22,4\left(g\right)\\ n_{Fe}=\dfrac{22,4}{56}=0,4\left(mol\right)\\ m_{Mg}=32-22,4=9,6\left(g\right)\\ n_{Mg}=\dfrac{9,6}{24}=0,4\left(mol\right)\\ 3Fe+2O_2\rightarrow\left(t^o\right)Fe_3O_4\\ 2Mg+O_2\rightarrow\left(t^o\right)2MgO\\ n_{O_2\left(tổng\right)}=\dfrac{2}{3}.n_{Fe}+\dfrac{1}{2}.n_{Mg}=\dfrac{2}{3}.0,4+\dfrac{1}{2}.0,4=\dfrac{7}{15}\left(mol\right)\\ V_{O_2\left(đktc\right)}=\dfrac{7}{15}.22,4=\dfrac{784}{75}\left(l\right)\\ V_{kk\left(đktc\right)}=\dfrac{784}{75}.\dfrac{100}{20}=\dfrac{784}{15}\left(l\right)\\ b,n_{Fe_3O_4}=\dfrac{1}{3}.0,4=\dfrac{2}{15}\left(mol\right)\\ n_{MgO}=n_{Mg}=0,4\left(mol\right)\\ m_{rắn}=m_{Fe_3O_4}+m_{MgO}=\dfrac{232.2}{15}+0,4.40=\dfrac{704}{15}\left(g\right)\)

\(a,m_{Fe}=\%Fe.m_{hh}=70\%.32=22,4\left(g\right)\)

\(m_{Mg}=m_{hh}-m_{Fe}=32-22,4=9,6\left(g\right)\)

\(n_{Fe}=\dfrac{m}{M}=\dfrac{22,4}{56}=0,4\left(mol\right)\\ n_{Mg}=\dfrac{m}{M}=0,4\left(mol\right)\)

\(PTHH:3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\left(1\right)\)

\(PTHH:2Mg+O_2\underrightarrow{t^o}2MgO\left(2\right)\)

\(Theo.PTHH\left(1\right):n_{O_2\left(Fe\right)}=\dfrac{2}{3}n_{Fe}=\dfrac{2}{3}.0,4=\dfrac{4}{15}\left(mol\right)\)

\(Theo.PTHH\left(2\right):n_{O_2\left(Mg\right)}=2n_{Mg}=2.0,4=0,8\left(mol\right)\)

\(\Rightarrow n_{O_2\left(tổng\right)}=n_{O_2\left(Fe\right)}+n_{O_2\left(Mg\right)}=\dfrac{4}{15}+0,8=\dfrac{16}{15}\left(mol\right)\)

\(\Rightarrow V_{O_2\left(đktc\right)}=n.22,4=\dfrac{16}{15}.22,4=\dfrac{1792}{75}\left(l\right)\)

\(\Rightarrow V_{kk}=V_{O_2}.5=\dfrac{1792}{75}.5=\dfrac{1792}{15}\left(l\right)\)

nC = 4,8/12 = 0,4 mol

nS = 6,4/32 = 0,2 mol

a. C + O2 -> (nhiệt độ) CO2

S + O2 -> (nhiệt độ) SO2

nO2 = nC + nS = 0,6 mol

=> nN2 = 4 x nO2 = 2,4 mol

=> n không khí = 3 mol => V = 67,2 L

b. mB = 44 x 0,4 + 64 x 0,2 = 30,4 g

nB = 0,6 mol

=> M(trung bình của B) = 30,4/0,6 = 50,67 g/mol 

\(m_C=10.36\%=3,6\left(g\right)\Rightarrow n_C=0,3\left(mol\right)\)

\(m_S=10-3,6=6,4\left(g\right)\Rightarrow n_S=0,2\left(mol\right)\)

\(C+O_2-^{t^o}\rightarrow CO_2\)

\(S+O_2-^{t^o}\rightarrow SO_2\)

\(n_{O_2}=0,3+0,2=0,5\left(mol\right)\)

Vì oxi chiếm 20% thể tích không khí 

=> \(V_{kk}=\dfrac{0,5.22,4}{20\%}=56\left(lít\right)\)

\(n_{hh}=n_{CO_2}+n_{SO_2}=0,3+0,2=0,5\left(mol\right)\)

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

PTHH: 

mS=10−3,6=6,4(g)⇔nS=6,432=0,2(mol)mS=10−3,6=6,4(g)⇔nS=6,432=0,2(mol)

VO2=(0,3+0,2)22,4=11,2(l)VO2=(0,3+0,2)22,4=11,2(l)

mhh=mCO2+mSO2=0,3.44+0,2.64=26(g)