The formula C4H8O has many isomers. a. Draw three isomers that have a carbon–oxygen double bond. What functional group is present in each of them?
b. Draw three alcohols with this formula.
c. Draw an ether with this formula that does not have a carbon–carbon double bond.

precipitation

explanation:

when it goes from cloud to rain/back to earth in the form of rain

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be