Напишите структурные формулы:

1) CH3-CH(CH3)-CH2-CH(CH3)-CH3 2) CH3-CH(CH3)-CH2-CH2-CH3 3) CH3-C(CH3)=CH-C(CH3)2-CH3 4) CH3-C=_C-CH(CH3)-CH3 5) CH3-CHCl-CHBr-CH2-CH3 6) CH3-CH2-CH(CH3)-CH2-CH2-CH3 7) CH3-CH(CH3)-CH(CH3)-CH2-CH3 8) CH2=C(CH3)-CH=CH2 9) CH3-C(CH3)2-CH2-CH(CH3)-CH(CH3)-CH2-CH2-CH3 10) CH3-CH2-C(CH3)(C2H5)-CH2-CH3