Ⅰ用系统命名法命名下列有机物:
(1)CH3-CH(C2H5)-C(C2H5)=CH-CH3______________________________
(2)CH3-CH(C2H5)-C(CH3)3__________________________________________________
Ⅱ有5种烃:甲烷、乙炔、苯、环己烷、甲苯,分别取一定量的这些烃,完全燃烧后生成m mol CO2和n mol H2O。则
(1)当m=n时,该烃是_____________________
(2)当m=2n时,该烃是_____________________
(3)当2m=n时,该烃是_____________________
(5)当4m=7n时,该烃是_____________________