Question

Cati moli de azot se gasesc intr.un vas de 5 L , la temperatura de 27°c si presiunea de 374 mm Hg

Answer 1

pV=nRT
374 mmHg= 0.49 atm (1 atm = 760mmHg)
V= 5L
T= 273 K + 27 gr C= 300 K
R=0.082 L x atm/mol x K

n=pV/RT
=> n= 0.49 x 5 / 0.082 x 300=0.099 mol.