Answer Happy

1)is the molecular formula of compound A
(above)?
2)How many π-bonds are present in compound
A?
3) Draw constitutional isomers of 1-butanol
(CH3CH2CH2CH2OH) that are
respectively: (i) another primary alcohol; (ii) a
secondary alcohol;
(iii) a tertiary alcohol; and (iv) two different
ethers.
4)Draw constitutional isomers of 1-butylamine
(CH3CH2CH2CH2NH2) that are respectively: (i) two different
secondary amines and (ii) a tertiary amine.
5)Draw diagrams to show two constitutional isomers of
1-pentene (below) which are also alkenes, and moreover are a pair
of cis/trans configurational isomers.