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Se dau 880 g Co2
Aflati Volumul ocupat in conditii normale, volumul ocupat la 7 c si 10 atm si numarul de molecule ce exista in aceasta cantitate !


Răspuns :

M CO2=12+32=44, niu =m/M=880/44=20 moli, V=niu*R*T=20*0,082*273=447,72 l in conditii normale, V=20*0.082*280/10=45,92 l , nr molecule=niu*NA=20*6,023*10^23=120,46*10^23 molecule.