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a) V(O2,đktc)=0,3.22,4=6,72(l)
b) V(CO2,đktc)= 1,25.22,4=28(l)
c) nSO2= 32/64=0,5(mol)
=>V(SO2,đktc)=0,5.22,4=11,2(l)
d) nH2= (4,2.1023)/ (6.1023)= 0,7(mol)
=>V(H2,đktc)=0,7.22,4=15,68(l)
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) mO2= nO2. M(O2)=0,45. 32=14,4(g)
b) mBaCO3=nBaCO3.M(BaCO3)=0,6.197=118,2(g)
c) mAl2(SO4)3=nAl2(SO4)3.M(Al2(SO4)3)=1,5.342=513(g)
d) nSO2=V(SO2,đktc)/22,4=16,8/22,4=0,7(mol)
=> mSO2=nSO2.M(SO2)=0,7.64=44,8(g)
e) nH2O=(3.1023):(6.1023)=0,5(mol)
=>mH2O=nH2O.M(H2O)=0,5.18=9(g)
f) nCO2=V(CO2,đktc)/22,4=8,96/22,4=0,4(mol)
=>mCO2=nCO2.M(CO2)=0,4.44=17,6(g)
\(n_{SO_2}=\dfrac{6,4}{64}=0,1mol\)
\(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2mol\)
\(\Rightarrow V_{hh}=\left(0,1+0,2+1,5+2,5\right).22,4=96,32l\)
\(m_{O_2}=1,5.32=48g\)
\(m_{N_2}=2,5.28=70g\)
\(m_{H_2}=0,2.2=0,4g\)
=> \(m_{hh}=48+70+0,4+6,4==124,8g\)
1.
\(a.\)
\(V_{hh}=\left(0.1+0.2+0.02+0.03\right)\cdot24=8.4\left(l\right)\)
\(b.\)
\(V_{hh}=\left(0.04+0.015+0.06+0.08\right)\cdot24=4.68\left(l\right)\)
\(2.\)
\(a.\)
\(V_{H_2}=0.5\cdot22.4=11.2\left(l\right)\)
\(V_{O_2}=0.8\cdot22.4=17.92\left(l\right)\)
\(b.\)
\(V_{CO_2}=2\cdot22.4=44.8\left(l\right)\)
\(V_{CH_4}=3\cdot22.4=67.2\left(l\right)\)
\(c.\)
\(V_{N_2}=0.9\cdot22.4=20.16\left(l\right)\)
\(V_{H_2}=1.5\cdot22.4=33.6\left(l\right)\)
\(a.V_{CO_2\left(dktc\right)}=0,25.22,4=5,6\left(l\right)\)
\(b.m_{Al_2O_3}=0,5.160=80\left(g\right)\)
a, VO\(_2\) = 0,15 . 22,4 = 3,36 lít
b, V\(CO_2\) = \((\dfrac{48}{44}).22,4\approx24,43\) ( lít )
c, \(V_{SO_2}=\left(\dfrac{16}{64}\right).22,4=5,6\) ( lít )
\(V_{H_2}=\left(\dfrac{18.10^{23}}{6.10^{23}}\right).22,4=67,2\) ( lít )
=> \(V_{hh}=5,6+67,2=72,8\) ( lít )
Bài 31:
a, mFe\(_2\)O\(_3\) = 0,4. 160 = 64( g )
b, \(m_{CO_2}=\left(\dfrac{14,56}{22,4}\right).44=28,6\) ( g )
c, \(m_{O_2}=\left(\dfrac{1,2.10^{23}}{6.10^{23}}\right).32=6,4\) ( g )