a)
n(Fe)=28/56=0.5 mol
n(Cu)=64/64=1 mol
n(Al)=5.4/27=0.2 mol
b)
V(CO2)=0.175*22.4=3.92 lít
V(H2)=1.25*22.4=28 lít
V(N2)=3*22.4=67.2 lít
c)
n(CO2)=0.44/44=0.01 mol
n(H2)=0.04/2=0.02 mol
n(N2)=0.56/28=0.02 mol
V(hh)= (0.01+0.02+0.02)*22.4=1.12 lít

n Fe = 28/56= 0,5 mol

n cu = 6,4 / 64= 0,1 mol

n Al = 5,4 / 27 =0,2 mol

V CO2 = 0,75 . 22,4 =16,8 l

V H2 = 1,25 . 22,4 = 28 l

 V N2 = 3 . 22,4 =67,2 l

trời

\(a.n=\dfrac{m}{M}=\dfrac{28}{56}=0,5\left(mol\right)\)

\(b.V=\dfrac{n}{22,4}=\dfrac{0,5}{22,4}=0,022\left(l\right)\)

\(c.m=n.M=0,5.28=14\left(g\right)\)

a, nFe= \(\dfrac{28}{56}=0,5\) mol

nCu= \(\dfrac{64}{64}=1\) mol

nAl= \(\dfrac{5,4}{27}=0,2\) mol

b, VCO2= 0,175.22,4= 3,92 (l)

VH2= 1,25.22,4= 28 (l)

VN2= 3.22,4= 67,2 (l)

c, mA= \(\dfrac{12,25}{0,125}=98\) (g/mol)

a) \(n_{Mg}=\dfrac{2,4}{24}=0,1\left(mol\right)\)

\(n_{Zn}=\dfrac{32,5}{65}=0,5\left(mol\right)\)

\(n_{Al}=\dfrac{2,7}{27}=0,1\left(mol\right)\)

\(n_{Cu}=\dfrac{19,2}{64}=0,3\left(mol\right)\)

b) 

\(m_{CO_2}=44.0,5=22\left(g\right)\)

\(m_{H_2}=1,5.2=3\left(g\right)\)

\(m_{N_2}=2.28=56\left(g\right)\)

\(m_{CuO}=3.80=240\left(g\right)\)

c) \(n_{Cl_2}=\dfrac{14,2}{71}=0,2\left(mol\right)\)

\(n_{H_2}=\dfrac{4,8}{2}=2,4\left(mol\right)\)

\(n_{O_2}=\dfrac{3,2}{32}=0,1\left(mol\right)\)

=> n_hh = 0,2 + 2,4 + 0,1 = 2,7 (mol)

=> V_hh = 2,7.22,4 = 60,48(l)

\(a.n_{Mg}=\dfrac{2,4}{24}=0,1\left(mol\right)\\ n_{Zn}=\dfrac{32,5}{65}=0,5\left(mol\right)\\ n_{Al}=\dfrac{2,7}{27}=0,1\left(mol\right)\\ n_{Cu}=\dfrac{19,2}{64}=0,3\left(mol\right)\)

\(b.m_{CO_2}=0,5.44=22\left(g\right)\\ m_{H_2}=1,5.2=3\left(g\right)\\ m_{N_2}=2.28=56\left(g\right)\\ m_{CuO}=3.80=240\left(g\right)\)

\(c.n_{Cl_2}=\dfrac{14,2}{71}=0,2\left(mol\right)\\ n_{H_2}=\dfrac{4,8}{2}=2,4\left(mol\right)\\ n_{O_2}=\dfrac{3,2}{32}=0,1\left(mol\right)\\\Rightarrow n_{hh}=0,2+2,4+0,1=2,7\left(mol\right)\\ \Rightarrow V_{hh}=2,7.22,4=60,48\left(l\right)\)

\(a,n_{Mg}=\dfrac{2,4}{24}=0,1(mol); n_{Zn}=\dfrac{32,5}{65}=0,5(mol)\\ n_{Al}=\dfrac{2,7}{27}=0,1(mol); n_{Cu}=\dfrac{19,2}{64}=0,3(mol)\)

\(b,m_{CO_2}=0,5.44=22(g);m_{H_2}=1,5.2=3(g)\\ m_{N_2}=2.28=56(g);m_{CuO}=3.80=240(g)\)

\(c,n_{hh}=n_{Cl_2}+n_{H_2}+n_{O_2}=\dfrac{14,2}{71}+\dfrac{4,8}{2}+\dfrac{3,2}{32}=0,2+2,4+0,1=2,7(mol)\\ V_{hh}=2,7.22,4=60,48(l)\)

1) V_CO2=n.22,4=0,3.22,4=6,72(l)

2) n_A=V/22,4=1,12/22,4=0,05(mol)

3) a) n_Fe=m/M=28/56=0,5(mol)

n_Cu=m/M=65/64=1(mol)

n_Al=m/M=5,4/27=0,2(mol)

b) V=n.22,4=0,175.22,4=3,92(lít)

V= n.22,4=1,25.22,4=28(lít)

V=n.22,4=3.22,4=67,2(lít)\

c) n_CO2=m/M=0,44/44=0,01(mol)

V_CO2=n.22,4=0,01.22,4=0,224(lít)

n_H2=m/M=0,04/2=0,02(mol)

V_H2=n.22,4=0,02.22,4=0,448(lít)

n_N2=m/M=0,56/28=0,02(mol)

V_N2=n.22,4=0,02.22,4=0,448(lít)

1.

\(a,n_{Al}=\dfrac{5,4}{27}=0,2(mol)\\ n_{CuO}=\dfrac{8}{80}=0,1(mol)\\ n_{Fe_2O_3}=\dfrac{16}{160}=0,1(mol)\\ b,V_{CO_2}=0,25.22,4=5,6(l)\\ V_{H_2}=0,175.22,4=3,92(l)\\ V_{N_2}=1,5.22,4=33,6(l)\)

2.

\(a,n_{Al}=0,5.2=1(mol);n_{O}=0,5.3=1,5(mol)\\ \Rightarrow m_{Al}=1.27=27(g);m_{O}=1,5.16=24(g)\\ b,n_{CO_2}=\dfrac{2,2}{44}=0,05(mol)\\ \Rightarrow m_C=0,05.12=0,6(g);m_O=0,05.2.16=1,6(g)\)

Câu 1:

\(d_{N_2/kk}=\dfrac{28}{29}\approx 0,97\\ d_{SO_2/kk}=\dfrac{80}{29}\approx 2,76\\ d_{NO_2/kk}=\dfrac{46}{29}\approx 1,59\)

Câu 2:

\(n_{CO_2}=\dfrac{0,44}{44}=0,01(mol);n_{N_2}=\dfrac{6.10^{23}}{6.10^{23}}=1(mol)\\ \Rightarrow V_{hh}=22,4(0,01+0,1+1)=24,864(l)\)

Câu 1:

\(d_{N_2/kk}=\dfrac{28}{29}=0,966\)

\(d_{SO_2/kk}=\dfrac{64}{29}=2,207\)

\(d_{NO_2/kk}=\dfrac{46}{29}=1,586\)

Câu 2:

\(n_{CO_2}=\dfrac{0,44}{44}=0,01\left(mol\right)\)

\(n_{N_2}=\dfrac{6.10^{23}}{6.10^{23}}=1\left(mol\right)\)

=> V_hh = (0,01+0,1+1).22,4 = 24,864(l)