Question

find the number of moles in 19g of AL2(CO3).(atomic mass unit Al =27 u, H = 1u, O=16 u and C = 12 u).

Answer 1

This is the solution for this

Answer 2

Al2(CO3)=27*2+(40+16*3)

54+88
=142u
19/142=find the answerr