дано
CnH2n-2
D(He) = 6.5
CnH2n-2 -?
M(CnH2n-2) = D(He) * 6.5 = 4*6.5 = 26 g/mol
M(CnH2n-2) = (14n-2) g/mol
14-2 = 26
14n = 26+2
14n = 28
n= 2
C2H2
M(C2H2) = 26 g/mol
ответ : АЦЕТИЛЕН
дано
CnH2n-2
D(He) = 6.5
CnH2n-2 -?
M(CnH2n-2) = D(He) * 6.5 = 4*6.5 = 26 g/mol
M(CnH2n-2) = (14n-2) g/mol
14-2 = 26
14n = 26+2
14n = 28
n= 2
C2H2
M(C2H2) = 26 g/mol
ответ : АЦЕТИЛЕН