=calculez numarul de moli de gaz din volumul dat
niu= V/V,m
niu=1000 l/22,4l/mol=
1mol contine ...6,023x10²³ molecule
1000/22,4...............N=60,23x10²⁵/22,4 molecule=.........................calculeaza !!
sau se pot aplica formulele de calcul
niu= V/V,m= N/N,A, unde N,A= 6,023X10²³ molecule/mol