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Câu 1
\(m_{HNO_3}=0,3.63=18,9\left(g\right)\)
\(m_{CuSO_4}=1,5.160=240\left(g\right)\)
\(m_{AlCl_3}=2.133,5=267\left(g\right)\)
Câu 2
a) \(V_{N_2}=3.22,4=67,2\left(l\right)\)
\(V_{H_2}=0,45.22,4=10,08\left(l\right)\)
\(V_{O_2}=0,55.22,4=12,32\left(l\right)\)
b) \(V_{hh}=\left(0,25+0,75\right).22,4=22,4\left(l\right)\)
\(a.V_{CO_2\left(dktc\right)}=0,25.22,4=5,6\left(l\right)\)
\(b.m_{Al_2O_3}=0,5.160=80\left(g\right)\)
\(a.n_{CO_2}=\dfrac{4,4}{44}=0,1\left(mol\right);n_{O_2}=\dfrac{0,6.10^{23}}{6.10^{23}}=0,1\left(mol\right)\\ V_{hh}=\left(0,5+1,5+0,1+0,1\right).22,4=49,28\left(l\right)\\ b.m_{hh}=0,5.28+1,5.2+4,4+0,1.32=24,6\left(g\right)\)
a, VN\(_2\) ( đktc ) = 0,5 . 22,4 = 11,2 lít
VH\(_2\) = 1,5 . 22,4 = 33,6 lít
\(n_{CO_2}=\dfrac{4,4}{44}=0,1\) ( mol )
=> \(V_{CO_2}=0,1.22,4=2,24\) ( lít )
\(n_{O_2}=\dfrac{0,6.10^{23}}{6.10^{23}}=0,1\) ( mol )
=> V\(O_2\) = 0,1 .22,4 = 2,24 lít
=> Vhh = 11,2 + 33,6 + 2,24 + 2,24 = 49,28 lít
b, \(m_{N_2}=0,5.28=14\) ( g )
\(m_{H_2}=1,5.2=3\) ( g )
\(m_{CO_2}=0,1.44=4,4\) ( g )
\(m_{O_2}=0,1.32=3,2\) (g)
\(m_{hh}=14+3+4,4+3,2=24,6\) ( g )
a) nCO2=[(9.1023)/(6.1023)]=1,5(mol)
=> mCO2=1,5.44=66(g)
V(CO2,đktc)=1,5.22,4=33,6(l)
b) nH2=4/2=2(mol)
N(H2)=2.6.1023=12.1023(phân tử)
V(H2,đktc)=2.22,4=44,8(l)
c) N(CO2)=0,5.6.1023=3.1023(phân tử)
V(CO2,đktc)=0,5.22,4=11,2(l)
mCO2=0,5.44=22(g)
d) nN2=2,24/22,4=0,1(mol)
mN2=0,1.28=2,8(g)
N(N2)=0,1.1023.6=6.1022 (phân tử)
e) nCu=[(3,01.1023)/(6,02.1023)]=0,5(mol)
mCu=0,5.64=32(g)
Mà sao tính thể tích ta :3
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:
\(m_{H_2S}=0,75.34=25,5(g)\\ m_{CaSO_4}=0,025.136=3,4(g)\\ m_{Fe_2O_3}=0,05.160=8(g)\)
Câu 2:
\(V_{N_2}=2,5.22,4=56(l)\\ V_{H_2}=0,03.22,4=0,672(l)\\ V_{O_2}=0,45.22,4=10,08(l)\\ V_{hh}=22,4.(0,2+0,25)=22,4.0,45=10,08(l)\)
V O 2 = n O 2 .22,4 = 0,05.22,4= 1,12(l)
V H 2 = n H 2 .22,4= 0,15.22,4= 3,36(l)
V C O 2 = n C O 2 .22,4=14.22,4 = 313,6(l)
a) \(n_{CO_2}=\dfrac{4,4}{44}=0,1\left(mol\right)=>V_{CO_2}=0,1.22,4=2,24\left(l\right)\)
\(n_{O_2}=\dfrac{3,2}{32}=0,1\left(mol\right)=>V_{O_2}=0,1.22,4=2,24\left(l\right)\)
b) \(n_{H_2O}=\dfrac{3.10^{23}}{6.10^{23}}=0,5\left(mol\right)\)
=> mH2O = 0,5.18 = 9(g)
c) \(n_{Mg}=\dfrac{12}{24}=0,5\left(mol\right)\)
=> Số nguyên tử Mg = 0,5.6.1023 = 3.1023
\(n_{Zn}=\dfrac{13}{65}=0,2\left(mol\right)\)
=> Số nguyên tử Zn = 0,2.6.1023 = 1,2.1023
Số nguyên tử Ag = 0,15.6.1023 = 0,9.1023
Số nguyên tử Al = 0,45.6.1023 = 2,7.1023