n1= 4molN2
n2=6molO2
n,total =10mol
notez fractia molara x=n/n,total
x1= 4/10=> 0,4
x3= 6/10=>0,6
p1= x1P= 0,4x5=.............
p2=x2P=0,6x5=..................
M,mediu= x1M1+x2M2= 0,4x28 + 0,6x32=........................g/mol
ro,mediu= M,mediu/V,m= M,mediu(g/mol)/22,4(l/mol)=..........................g/l
d,aer= Mmediu/M,aer= M,mediu/ 29=...................... adimensionala