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a) \(V_{O_2}=0,2\times22,4=4,48\left(l\right)\)
b) \(n_{SO_2}=\frac{76,8}{64}=1,2\left(mol\right)\)
\(\Rightarrow V_{SO_2}=1,2\times22,4=26,88\left(l\right)\)
c) \(n_{N_2}=\frac{7,5\times10^{23}}{6\times10^{23}}=1,25\left(mol\right)\)
\(\Rightarrow V_{N_2}=1,25\times22,4=28\left(l\right)\)
d) \(V_{hhX}=\left(0,2+0,25\right)\times22,4=10,08\left(l\right)\)
\(a.\)
\(n_{hh}=0.2+0.15+0.1=0.45\left(mol\right)\)
\(V_X=0.45\cdot22.4=10.08\left(l\right)\)
\(b.\)
\(m_X=0.2\cdot28+0.15\cdot71+0.1\cdot32=19.45\left(g\right)\)
\(c.\)
\(\overline{M}_X=\dfrac{19.45}{0.45}=43.22\left(g\text{/}mol\right)\)
\(d.\)
\(d_{X\text{/}kk}=\dfrac{43.22}{29}=1.4\)
Nặng hơn không khí 1.4 lần
\(a.m_{Mg}=0,1.24=2,4\left(g\right)\\ m_{Ca}=0,2.40=8\left(g\right)\\ b.n_{hh}=\dfrac{2,8}{28}+\dfrac{13,2}{44}=0,4\left(mol\right)\\ \Rightarrow V_{hh}=0,4.22,4=8.96\left(l\right)\)
a.
\(m_{Al}=0.5\cdot27=13.5\left(g\right)\)
\(m_{CO_2}=\dfrac{6.72}{22.4}\cdot44=13.2\left(g\right)\)
\(m_{N_2}=\dfrac{5.6}{22.4}\cdot28=7\left(g\right)\)
\(m_{CaCO_3}=0.25\cdot100=25\left(g\right)\)
b.
\(m_{hh}=\dfrac{3.36}{22.4}\cdot2+\dfrac{5.6}{22.4}\cdot28+0.2\cdot44=16.1\left(g\right)\)
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)