Asked by Les

How many aluminum atoms are there in 15.0mg of Al2O3?
Answered by bobpursley
figure moles of alumium oxide first
moles=.015/molmassAl2O3

there are twice as many moles as that of aluminum atoms.

aluminum atoms=2*molesAl2O3*avagnumber
Answered by Les
Thank you bobpursley!!!
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