If `1 1/2` moles of oxygen combine with Al to form `Al_(2)O_(3)` the weight of Al used in the reaction is (Al=27)

If half mole of oxygen combine with Al to form Al_(2)O_(3) the weight of Al used in the reaction is:

If 1.5 moles of oxygen combine with Al to form Al_2O_3 , the mass of Al in g (Atomic mass of Al = 27] used in the reaction is

Fe_(2)O_(3)+2Al to Al_(2)O_(3)+2Fe The type of above chemical reaction is

Al_(2)O_(3) is used in _____ chromatography.

on heating Al at 800^(@)C in air, Al_2 O_3 is formed. The reaction is :