$**$De$.$ter.mine th$.$e com.po$.$siti.ons a$.$nd quan.tit.ies of g$.$as and li$.$q$.$uid wh$.$en $5$ lb$.$ mo$.$les of a$.*$

m$.$ixt.ure of $27\mathrm{.}5.$mo$.$le per.ce $,$nt $.$met.hane., $10.$mole per.cen,t $.$

$..$pr$.$opa.ne and $12\mathrm{.}5$ mo$.$le per.cent n$-$pen.tane is bro.ugh.t to

$...$ equili.brium. a$.$t $80$F and $750$ psia