Question

No.of moles in 81g of aluminium..

Answer 1

moles in 81 gm of aluminium =81/27 = 3 

Answer 2

HI

HERE IZ UR ANSWER.

Moles = given mass/molar mass

Al - atomic no. = 27 u
Given mass = 81 u

So, moles = 81/27 = 3 moles

HOPE IT HELPS