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ta có: nCl2=\(\frac{7,1}{71}=0,1mol\)
\(V_{Cl2}=0,1.22,4=2,24\left(l\right)\)
\(n_{CO2}=\frac{8,8}{44}=0,2\left(mol\right)\)
\(V_{CO2}=0,2.22,4=4,48\left(l\right)\)
\(n_{NO2}=\frac{4,6}{46}=0,1\left(mol\right)\)
\(V_{NO2}=0,1.22,4=2,24\left(l\right)\)
\(n_{h^2}=0,1+0,2+0,1=0,4\left(mol\right)\)
\(V_{h^2}=2,24+2,24+4,48=8,96\left(l\right)\)
b) ta có \(n_{O2}=\frac{16}{32}=0,5\left(mol\right)\)
\(n_{N2}=\frac{14}{28}=0,5\left(mol\right)\)
\(\Leftrightarrow n_{h^2}=0,5+0,5=1\left(mol\right)\)
c) vì \(S=n.6.10^{23}\Rightarrow n=\frac{S}{6.10^{23}}\)
\(n_{N2}=\frac{1,5.10^{23}}{6.10^{23}}=0,25\left(mol\right)\)
\(V_{N2}=0,25.22,4=5,6\left(l\right)\)
\(n_{CO2}=\frac{9.10^{23}}{6.10^{23}}=1,5\left(mol\right)\)
\(V_{CO2}=1,5.22,4=33,6\left(l\right)\)
chúc bạn học tốt like mình nha
1.
\(a.\)
\(V_{hh}=\left(0.1+0.2+0.02+0.03\right)\cdot24=8.4\left(l\right)\)
\(b.\)
\(V_{hh}=\left(0.04+0.015+0.06+0.08\right)\cdot24=4.68\left(l\right)\)
\(2.\)
\(a.\)
\(V_{H_2}=0.5\cdot22.4=11.2\left(l\right)\)
\(V_{O_2}=0.8\cdot22.4=17.92\left(l\right)\)
\(b.\)
\(V_{CO_2}=2\cdot22.4=44.8\left(l\right)\)
\(V_{CH_4}=3\cdot22.4=67.2\left(l\right)\)
\(c.\)
\(V_{N_2}=0.9\cdot22.4=20.16\left(l\right)\)
\(V_{H_2}=1.5\cdot22.4=33.6\left(l\right)\)
a) \(n_{Fe}=\dfrac{28}{56}=0,5\left(mol\right)\)
b) \(n_{Al}=\dfrac{13,5}{27}=0,5\left(mol\right)\)
c) \(n_{CO_2}=\dfrac{11}{44}=0,25\left(mol\right)\)
d) \(m_{O_2}=\dfrac{4,958.0,99}{0,082.\left(273+25\right)}=0,2\left(mol\right)\)
e) \(m_{CH_4}=\dfrac{12,359.0,99}{0,082\left(273+25\right)}=0,5\left(mol\right)\)
a: \(n=\dfrac{28}{56}=0.5\left(mol\right)\)
b: \(n=\dfrac{13.5}{27}=0.5\left(mol\right)\)
a: \(m=0.35\cdot\left(39\cdot2+32+16\cdot4\right)=60,9\left(g\right)\)
b: \(V=0.75\cdot22.4=16.8\left(lít\right)\)
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:
\(n_{CO_2}=\dfrac{0,44}{44}=0,01\left(mol\right)\)
\(n_{N_2}=\dfrac{6.10^{23}}{6.10^{23}}=1\left(mol\right)\)
=> Vhh = (0,01+0,1+1).22,4 = 24,864(l)
n NO2=4,6\46=0,1 mol
=>VNO2=0,1.22,4=2,24l
m gam mà Thịnh :))