$1)$ A gas mixture contains $0\mathrm{.}28$ kg of carbon monoxide CO$,0\mathrm{.}16$ kg of oxygen $0,$ and $0\mathrm{.}66$ kg of carbon dioxide CO$,$ at pressure $1\mathrm{.}4$ bars and temperature $17\backslash$deg C$.$ Calculate $($a$)$ the volume fractions of mixture components, $($b$)$ apparent gas constant, in ki$/$kgk$,$ and $($c$)$ the volume occupied by the mixture, in cubic meters.