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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
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)
\(a_1,m_{CaCO_3}=0,25.100=25(g)\\ a_2,m_{SO_2}=\dfrac{3,36}{22,4}.64=9,6(g)\\ a_3,m_{H_2SO_4}=\dfrac{9.10^{23}}{6.10^{23}}.98=147(g)\)
a) \(n_{N_2O}=\dfrac{3,3}{44}=0,075\left(mol\right)\)
=> \(V_{N_2O}=0,075.22,4=1,68\left(l\right)\)
\(n_{CO_2}=\dfrac{95,48}{44}=2,17\left(mol\right)\)
=> \(V_{CO_2}=2,17.22,4=48,608\left(l\right)\)
\(n_{SO_2}=0,5\left(mol\right)\)
=> \(V_{SO_2}=0,5.22,4=11,2\left(l\right)\)
b) \(n_{CO_2}=0,08\left(mol\right)\)
\(n_{NH_3}=0,09\left(mol\right)\)
=> \(V_{hh}=\left(0,08+0,09\right).22,4=3,808\left(l\right)\)
c) \(n_{CO_2}=\dfrac{0,88}{44}=0,02\left(mol\right)\)
\(n_{NH_3}=\dfrac{0,68}{17}=0,04\left(mol\right)\)
=> \(V_{hh}=\left(0,02+0,04\right).22,4=1,344\left(l\right)\)
:Hãy cho biết thể tích khí ở đktc của: a)3,3 g N2O; 95,48 g CO2; 0,5 N phân tử SO2.
n N2O=\(\dfrac{3,3}{44}=0,075mol\)
=>VN2O=0,075.22,4=1,68l
n CO2=\(\dfrac{95,48}{44}\)=2,17mol
=>VCO2=2,17.22,4=48,608l
mol
b)Hỗn hợp khí gồm: 0,08 N phân tử CO2; 0,09 N phân tử NH3. c)Hỗn hợp khí gồm: 0,88 g CO2; 0,68 g NH3.
=>n hh=\(\dfrac{0,08N}{6N}+\dfrac{0,09N}{6N}=\dfrac{17}{600}N\)
=>VhhCO2, NH3=\(\dfrac{17}{600}.22,4=\dfrac{238}{375}l\)
->nhh=\(\dfrac{0,88}{44}+\dfrac{0,68}{17}=0,06mol\)
=>VhhCO2, NH3=0,06.22,4=1,344l
\(n_{SO_2}=\dfrac{12,8}{64}=0,2\left(mol\right)\)
\(n_{O_2}=\dfrac{9,6}{32}=0,3\left(mol\right)\)
\(n_{N_2}=\dfrac{14}{28}=0,5\left(mol\right)\)
=> Vhh = (0,2+0,3+0,5).22,4 = 22,4 (l)
\(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2\left(mol\right)\)
\(n_{SO_2}=\dfrac{6,4}{64}=0,1\left(mol\right)\)
=> 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)
\(n_{SO_2}=\dfrac{6,4}{64}=0,1mol\)
\(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2mol\)
\(\Rightarrow V_{hh}=\left(0,1+0,2+1,5+2,5\right).22,4=96,32l\)
\(m_{O_2}=1,5.32=48g\)
\(m_{N_2}=2,5.28=70g\)
\(m_{H_2}=0,2.2=0,4g\)
=> \(m_{hh}=48+70+0,4+6,4==124,8g\)
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) \(m_{hh}=1,5.32+2,5.28+0,2.2+6,4=124,8\left(g\right)\)
$n_{CO_2} = \dfrac{8,8}{44} = 0,2(mol)$
$V_{CO_2} = 0,2.22,4 = 4,48(lít)$
$n_{NO_2} = \dfrac{6.10^{23}}{6.10^{23}} = 1(mol)$
$V_{NO_2} = 1.22,4 = 22,4(lít)$
$n_{SO_2} = \dfrac{12,8}{64} = 0,2(mol)$
$V_{SO_2} = 0,2.22,4 = 4,48(lít)$
$n_{SO_3} = \dfrac{1,5.10^{23}}{6.10^{23}} = 0,25(mol)$
$V_{SO_3} = 0,25.22,4 = 5,6(lít)$
Hãy tính thể tích (đktc) của
b)8,8g CO2
\(n_{CO_2}=\dfrac{8,8}{44}=0,2\left(mol\right)\Rightarrow V_{CO_2}=0,2.22,4=4,48\left(l\right)\)
C)6.1023 phân tử NO2
\(n_{NO_2}=\dfrac{6.10^{23}}{6.10^{23}}=1\Rightarrow V_{NO_2}=1.22,4=22,4\left(lít\right)\)
d)Hỗn hợp gồm {12,8 g SO2, 1,5.10 pt SO3
\(n_{SO_2}=\dfrac{12,8}{54}=0,2\left(mol\right);n_{SO3}=\dfrac{1,5.10^{23}}{6.10^{23}}=0,25\left(mol\right)\)
=> \(V_{hh}=\left(0,2+0,25\right).22,4=10,08\left(l\right)\)