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\(a.m_{Mg}=0,1.24=2,4\left(g\right)\\ m_{Ca}=0,2.40=8\left(g\right)\\ b.n_{hh}=\dfrac{2,8}{28}+\dfrac{13,2}{44}=0,4\left(mol\right)\\ \Rightarrow V_{hh}=0,4.22,4=8.96\left(l\right)\)
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) \(n_{Cl_2}=\dfrac{14,2}{71}=0,2\left(mol\right)\)
\(n_{H_2}=\dfrac{4,8}{2}=2,4\left(mol\right)\)
\(n_{O_2}=\dfrac{3,2}{32}=0,1\left(mol\right)\)
=> nhh = 0,2 + 2,4 + 0,1 = 2,7 (mol)
=> Vhh = 2,7.22,4 = 60,48(l)
\(a.n_{Mg}=\dfrac{2,4}{24}=0,1\left(mol\right)\\ n_{Zn}=\dfrac{32,5}{65}=0,5\left(mol\right)\\ n_{Al}=\dfrac{2,7}{27}=0,1\left(mol\right)\\ n_{Cu}=\dfrac{19,2}{64}=0,3\left(mol\right)\)
\(b.m_{CO_2}=0,5.44=22\left(g\right)\\ m_{H_2}=1,5.2=3\left(g\right)\\ m_{N_2}=2.28=56\left(g\right)\\ m_{CuO}=3.80=240\left(g\right)\)
\(c.n_{Cl_2}=\dfrac{14,2}{71}=0,2\left(mol\right)\\ n_{H_2}=\dfrac{4,8}{2}=2,4\left(mol\right)\\ n_{O_2}=\dfrac{3,2}{32}=0,1\left(mol\right)\\\Rightarrow n_{hh}=0,2+2,4+0,1=2,7\left(mol\right)\\ \Rightarrow V_{hh}=2,7.22,4=60,48\left(l\right)\)
\(a,n_{Mg}=\dfrac{2,4}{24}=0,1(mol); n_{Zn}=\dfrac{32,5}{65}=0,5(mol)\\ n_{Al}=\dfrac{2,7}{27}=0,1(mol); n_{Cu}=\dfrac{19,2}{64}=0,3(mol)\)
\(b,m_{CO_2}=0,5.44=22(g);m_{H_2}=1,5.2=3(g)\\ m_{N_2}=2.28=56(g);m_{CuO}=3.80=240(g)\)
\(c,n_{hh}=n_{Cl_2}+n_{H_2}+n_{O_2}=\dfrac{14,2}{71}+\dfrac{4,8}{2}+\dfrac{3,2}{32}=0,2+2,4+0,1=2,7(mol)\\ V_{hh}=2,7.22,4=60,48(l)\)
a)mCuO=0.25*(64+16)=20(g)
b)\(n_{MgCl_2}=\dfrac{19}{95}=0.2\left(mol\right)\)
Số phân từ MgCl2 có trong 19g là
0.2*6*1023=1,2.1023
c)
\(V_{hh}=\left(0.2+0.3+\dfrac{6.4}{32}\right).22,4=\left(0.5+0.2\right)=0.7\cdot22,4=15,68\left(l\right)\)
\(a,V_{N_2\left(đktc\right)}=2,1\cdot22,4=47,04\left(l\right)\\ b,V_{CO_2\left(đktc\right)}=n_{CO_2}\cdot22,4=\dfrac{8,16}{44}\cdot22,4\approx4,15\left(l\right)\)
a)
$V_{O_2} = 0,2.22,4 = 4,48(lít)$
b)
$n_{SO_2} = \dfrac{76,8}{64} = 1,2(mol)$
$V_{SO_2} = 1,2.22,4 = 26,88(lít)$
c)
$n_{N_2} = \dfrac{7,5.10^{23}}{6.10^{23}} = 1,25(mol)$
$V_{N_2} = 1,25.22,4 = 28(lít)$
d)
$V_X = (0,2 + 0,25).22,4 = 10,08(lít)$
a) V(O2,đktc)=0,2.22,4=4,48(l)
b) V(SO2,đktc)= (76,8/64).22,4=26,88(l)
c) V(N2,đktc)= [(7,5.1023)/(6.1023)].22,4= 28(l)
d) VhhX(đktc)= V(O2,đktc) + V(N2,đktc)= 0,2.22,4+0,25.22,4=10,08(l)
a) VCO2=0,25.22,4=5,6 (l)
nN2=56:28=2 mol
VN2=2.22,4=44,8 (l)
Vhh=44,8+5,6=50,4 (l)
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