Объяснение:
M(CxHy)=D•M(O2)=3.125•2•16= 100
w(C)+w(H)=100%
w(C)=100-16=84%
w(C)=x•M(C)/M(CxHy)
0.84=x•12/100
12x=84; x= 7.
w(Н)=y•M(Н)/M(CxHy)
0.16=x•1/100
1x=16; x= 16.
C7H16 гептан; M(C7H16)= 7•12+16•1=84+16=100г/моль
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Объяснение:
M(CxHy)=D•M(O2)=3.125•2•16= 100
w(C)+w(H)=100%
w(C)=100-16=84%
w(C)=x•M(C)/M(CxHy)
0.84=x•12/100
12x=84; x= 7.
w(Н)=y•M(Н)/M(CxHy)
0.16=x•1/100
1x=16; x= 16.
C7H16 гептан; M(C7H16)= 7•12+16•1=84+16=100г/моль