Compozitia procentuala pt
Al2O3


Răspuns :

Al2O3

M=2.27 +3.16=102----->1mol=102g

102 g Al2O3---------54g Al---------48 g O

100g-----------------------x-----------------y

x=100.54: 102=52,94  la suta Al

y=100.48:102=47,05  la suta O