1.T1= 273+23=>300K; p1=1atm,
T2=500 K p2?
p1/T1=p2/T2---------------------------------INLOCUIESTE si calculeaza p2
2. amestec din n moli H2 si n moli N2 -- > 500g= n(2gH2+28gN2)->
n=50/3 moli
pV= nRT; PX8=(50/3)x 0,082x(273+47)--->p=.............
M= 1/2x 28+1/2x2 , g/mol= 15g/mol
d= M/M,aer=> d= 15/29