Make up the molecular formulas of methane hydrocarbons, the molecules of which contain

Make up the molecular formulas of methane hydrocarbons, the molecules of which contain: a) 18 carbon atoms b) 21 carbon atoms c) 28 hydrogen atoms

Let’s compose formulas using the periodic table and identifying suitable substances.

General formula of the form: СnH2n + 2

For the first option a) 18 carbon atoms:

Solution: a) C18H38

For the second option b) 21 carbon atoms:

Solution: b) C21H44

For the third option c) 28 hydrogen atoms:

Solution: c) C28H58