1A H H H H H H H H H H
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H - C- H - C - H - C - H - C- H- C- H- C- H- C- H - C - H - C - H- C - H
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H H H H H H H H H H
1Б C2H5
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H3C-H2C-C-CH2-CH2-CH3
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C2H5
1В C10H22
2a ундекан С11Н24
H3C-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3
додекан C12H26
H3C-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3
2б этан С2H6
H3C-CH3
пропан C3H8
H3C-CH2-CH3
3 H3C-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3
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CH2 2-метилоктан
CH2
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H3C-CH2-CH2-CH2-CH2-CH2-CH2-CH3
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CH2 2,2-диметилнонан
4.2С10H22+31O2=20CO2+22H2O 75
5.n(C10H22)=240/142=1.69моль
n(O2)=1.69*31/2=26.2моль
V(O2)=26.2*22.4=586.9 дм3
CsI
Ar(Cs)=133g/mol
Ar(I) = 127g/mol
Mr(CsI)=260g/mol
W(Cs)= 133/260*100=51.2%
W(I)=127/260*100=48.8%
H2S
Ar(H)=1g/mol
Ar(S)=32g/mol
Mr(H2S)=34g/mol
W(H)=2*1/34*100=6%g/mol
W(S)=32/34*100=94%
C3N4
Ar(C)=12g/mol
Ar(N)=14g/mol
Mr(C3N4)=92g/mol
W(C) = 3*12/92*100=39%
W(N)=4*14/92*100=61%
K2Cr2O7
Ar(K)=39g/mol
Ar(Cr)=52g/mol
Ar(O)=16g/mol
Mr(K2Cr2O7)=294g/mol
W(K)=2*39/294*100=26.5%
W(Cr)=2*52/294*100=35.4%
W(O) =7*16/294*100=38.1%
NH4NO3
Ar(N)=14g/mol
Ar(H)=1g/mol
Ar(O)=16g/mol
Mr(NH4NO3)=80g/mol
W(N)=2*14/80*100=35%
W(H)=4*1/80*100=5%
W(O)=3*16/80*100=60%