DENSITATEA ABSOLUTA ro= M/Vm
DENSITATEA RELATIVA d= M/M,aer, M,aer= 29g/mol
M,Cl2= 71g/mol
ro= 71g/mol/ 22,4 l/mol= 3,17 g/ l
d= 71g/mol/ 29 g/mol=2,45
M,NH3= 17g/mol
ro= 17g/mol/22,4 l/mol=....................calculeaza !!!!
d= 17g/mol/29g/mol=.......................calculeaza !!!!