calculez nr.total moli:
niu= 6,4g/32g/molO2-=0,2mol
niu=0,1molN2
niu =N/N,A= > 1,204X10²³/ 6,023X10²³= 0,2molCH4
niu,total= 0,5+ niu,He
calculez niu,He:
p= fx P,unde f este fractia molara a He===> niu,He/ (0,5+niu,He)
100/760 *= 350/760*xniu/(0,5+niu)-->niu(/0,5+niu)=0,286
niu,He=0,2mol----> niu,total= 0,7mol
pV=niuxRT--->350/760*xV=0,7x0,082x(5+273) calculeaza V,in litri !!!!!
* rapoartele reprezinta presiunea in atm,pentru ca 1 atm=760mm