Determine how many atoms there are in 1 litre of hexane or gasoline. A litre of gasoline has a mass of approximately 850.0 grams. Assume that the molecular formula for gasoline is C6H6

Answer 1

calculate the RMM based on C6H6 = 78

(you may want to get a more accurate figure)

i.e. there are 78 g mole^-1

so number fo moles = M = 850.0 g /78 g mole^-1

as there are avogadros number (6.023 x 10^23) of molecules on one mole the number of molecules is

M x 6.023 x 10^23

there are 12 atoms per molecule (C6H6)

so the number of atoms is 12 times the number of molecules.