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\(a.\)
\(n_{hh}=0.2+0.15+0.1=0.45\left(mol\right)\)
\(V_X=0.45\cdot22.4=10.08\left(l\right)\)
\(b.\)
\(m_X=0.2\cdot28+0.15\cdot71+0.1\cdot32=19.45\left(g\right)\)
\(c.\)
\(\overline{M}_X=\dfrac{19.45}{0.45}=43.22\left(g\text{/}mol\right)\)
\(d.\)
\(d_{X\text{/}kk}=\dfrac{43.22}{29}=1.4\)
Nặng hơn không khí 1.4 lần
\(a.n_{CO_2}=\dfrac{4,4}{44}=0,1\left(mol\right);n_{O_2}=\dfrac{0,6.10^{23}}{6.10^{23}}=0,1\left(mol\right)\\ V_{hh}=\left(0,5+1,5+0,1+0,1\right).22,4=49,28\left(l\right)\\ b.m_{hh}=0,5.28+1,5.2+4,4+0,1.32=24,6\left(g\right)\)
a, VN\(_2\) ( đktc ) = 0,5 . 22,4 = 11,2 lít
VH\(_2\) = 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
=> Vhh = 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) \(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2\left(mol\right)\); \(n_{SO_2}=\dfrac{6,4}{64}=0,1\left(mol\right)\)
V = (1,5 + 2,5 + 0,2 + 0,1).22,4 = 96,32 (l)
b) \(m_{hh}=1,5.32+2,5.28+0,2.2+6,4=124,8\left(g\right)\)
\(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2\left(mol\right)\)
\(n_{SO_2}=\dfrac{6,4}{64}=0,1\left(mol\right)\)
=> Vhh = (1,5 + 2,5+ 0,2 +0,1).22,4 = 96,32(l)
mhh = 1,5.32 + 2,5.28 + 0,2.2 + 6,4 = 124,8(g)
\(a.m_{Mg}=0,1.24=2,4\left(g\right)\\ m_{Ca}=0,2.40=8\left(g\right)\\ b.n_{hh}=\dfrac{2,8}{28}+\dfrac{13,2}{44}=0,4\left(mol\right)\\ \Rightarrow V_{hh}=0,4.22,4=8.96\left(l\right)\)
a, \(\overline{M}=\dfrac{0,1.44+0,2.28}{0,1+0,2}\approx33,33\left(g/mol\right)\)
b, \(\overline{M}=\dfrac{0,2.28+0,3.2}{0,2+0,3}=12,4\left(g/mol\right)\)
c, \(\overline{M}=\dfrac{0,1.28+0,2.30+0,2.44}{0,1+0,2+0,2}=35,2\left(g/mol\right)\)
d, \(\overline{M}=\dfrac{0,2.56+0,1.24+0,1.27}{0,2+0,1+0,1}=40,75\left(g/mol\right)\)
