Ascientist has a new cough medicine by giving it to a group of course the scientist gives another group called the liquid and tells them cough medicine the people and goods are women between the ages of 20 and 30 you never a are in good health identify the experimental group and control group and it controls explain your decision

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )

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