Răspunsuri

2014-04-29T15:09:52+03:00
PV=nr moli*R*T
nr moli=p*V/R*T=(1,5*5)/(0,082*127) = 0,72018 moli
1 mol NH3..........6,022 * 10 la 23 molecule
0,72018 moli NH3...............x molecule             x = 4,33692 * 10 la 23 molecule NH3