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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
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
nSO2=0,5N6N=112(mol)
n SO2=\(\dfrac{0,5N}{6N}=\dfrac{1}{12}mol\)
=>VSO2=\(\dfrac{1}{12}.22,4=\dfrac{28}{35}\)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
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)
nH2 = \(\dfrac{16,8}{22,4}=0,75\left(mol\right)\)
nNO2 = \(\dfrac{1,2\times10^{23}}{6\times10^{23}}=0,2\left(mol\right)\)
nSO3 = \(\dfrac{8}{80}=0,1\left(mol\right)\)
nhh = nH2 + nNO2 + nSO3 = 0,75 + 0,2 + 0,1 = 1,05 mol
Vhh = VH2 + VNO2 + VSO3 = 16,8 + (0,2 + 0,1). 22,4 = 23,52 lít
mhh = 0,75 . 2 + 0,2 . 46 + 8 = 18,7 (g)
MTB = \(\dfrac{m_{hh}}{n_{hh}}=\dfrac{18,7}{1,05}=17,8\)
a) mFeSO4= 0,25.152=38(g)
b) mFeSO4= \(\dfrac{13,2.10^{23}}{6.10^{23}}.152=334,4\left(g\right)\)
c) mNO2= \(\dfrac{8,96}{22,4}.46=18,4\left(g\right)\)
d) mA= 27.0,22+64.0,25=21,94(g)
e) mB= \(\dfrac{11,2}{22,4}.32+\dfrac{13,44}{22,4}.28=32,8\left(g\right)\)
g) mC= \(64.0,25+\dfrac{15.10^{23}}{6.10^{23}}.56=156\left(g\right)\)
h) mD= \(0,25.32+\dfrac{11,2}{22,4}.44+\dfrac{2,7.10^{23}}{6.10^{23}}.28=42,6\left(g\right)\)
hơi muộn nha<3
a/ nHCl = 5,6 / 22,4 = 0,25 mol
=> mhỗn hợp = 0,3 x 80 + 0,25 x 36,5 = 33.125 gam
b/ nSO2 = 16 / 64 = 0,25 mol
=> Vhỗn hợp(đktc) = ( 0,25 + 0,15 ) x 22,4 = 8,96 lít
nSO2=m:M=6,4:64=0,1(mol)
VSO2=n.22,4=0,1.22,4=2,24(l)
nCO2=m:M=4,4:44=0,1(mol)
VCO2=n.22,4=0,1.22,4=2,24(l)
nH2=S:6.1023=1,2.1023:6.1023=0,2(mol)
VH2=n.22,4=0,2.22,4=4,48(l)
\(a.n_{SO_2}=\dfrac{m}{M}=\dfrac{6,4}{64}=0,1\left(mol\right)\\ n_{CO_2}=\dfrac{m}{M}=\dfrac{4,4}{44}=0,1\left(mol\right)\\ \Rightarrow n_{hh}=n_{SO_2}+n_{CO_2}=0,1+0,1=0,2\left(mol\right)\\ \Rightarrow V_{hh}=n.22,4=0,2.22,4=4,48\left(l\right)\)
\(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2\left(mol\right)\Rightarrow V_{H_2}=n.22,4=0,2.22,4=4,48\left(l\right)\)
$n_{CO_2} = \dfrac{8,8}{44} = 0,2(mol)$
$V_{CO_2} = 0,2.22,4 = 4,48(lít)$
$n_{NO_2} = \dfrac{6.10^{23}}{6.10^{23}} = 1(mol)$
$V_{NO_2} = 1.22,4 = 22,4(lít)$
$n_{SO_2} = \dfrac{12,8}{64} = 0,2(mol)$
$V_{SO_2} = 0,2.22,4 = 4,48(lít)$
$n_{SO_3} = \dfrac{1,5.10^{23}}{6.10^{23}} = 0,25(mol)$
$V_{SO_3} = 0,25.22,4 = 5,6(lít)$
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
\(n_{SO_2}=\dfrac{12,8}{54}=0,2\left(mol\right);n_{SO3}=\dfrac{1,5.10^{23}}{6.10^{23}}=0,25\left(mol\right)\)
=> \(V_{hh}=\left(0,2+0,25\right).22,4=10,08\left(l\right)\)