a) Un pato que nada en un estanque efectúa 25 oscilaciones en 4 minutos. Calcula el período de las ondas causadas por las oscilaciones del pato

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

5 structural isomers

the isomers are:

n-exane :   ch3ch2ch2ch2ch2ch3

2-methylpentane :   ch3ch(ch3)ch2ch2ch3

3-methylpentane :   ch3ch2ch(ch3)ch2ch3

2,3-dimethylbutane :   (ch3)2chch(ch3)2

2,2-dimethylbutane :   (ch3)3cch2ch3