Calculate mass of `O` atoms in `6gm CH_(3) COOH` ?

Explanation

Molar mass of `CH_(3) COOH = 60`
Moles of `CH_(3) COOH = (6)/(60) = 0.1`
1mole `CH_(3)COOH` has `2mol O` atoms
`0.1` mole `CH_(3)COOH` has `0.2molO` atoms
`"Mass of oxygen" = "moles" xx "Atomic mass" =0.2 xx 16 = 3.2 gm` .