How many aluminium atoms will be there in 6.15 gram of aluminium nitri

1.	How many aluminium atoms will be there in 6.15 gram of aluminium nitride
Answer» 0.15×AVOGADRO's no.Explanation:AlN atomic mass=27+14=41no. of moles of aluminium nitride=6.15÷41 =0.151 MOLE AlN CONTAIN 1 mole AL i.e. 6.022×10^23 ATOMS hence, 0.15 AlN contain =0.15× avogadro's no. atoms of Al

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