a)calculez vol. clorului care intra in reactie in c.n.
V=400 L; p=1,8 atm; T=273+400= 673 K
pV/T = p₀V₀/T₀
1,8X400/ 673= 1XV₀/273---> V₀= 292 L Cl2
1mol 1mol 2mol
b) H2 +CL2= 2HCl
2g.......22,4l...... 2mol
x.........292.l........ y
x= 2x292/22,4=26gH2
y=292x2/22,4=26 mol HCl
1mol HCl..........6,023x10²³ molecule
26mol..............N= 26x6,023x10²³ molecule calculeaza !!!!!!