Problem $1$: $($a$)100\mathrm{.}0g$ sample of acetic acid contains $39\mathrm{.}9gC,6\mathrm{.}7gH$ and $53\mathrm{.}5gO.$ What is the empirical formula of acetic acid?

Element #g #mol$-$atom simple mol$-$atom$/$mol$-$atom ratio mol atom of Elem. in EF

c

$($b$)$ If the molar mass is $60\mathrm{.}0g,$ what is the molecular formula? $M\frac{W}{E}W=n$ and $MF=(EF{)}_n$