Question

how many moles and atoms are there in 1 gram of CaCO3

Answer 1

0.01 moles are present since molecular weight of given compound is 100

and there are 5 atoms in any quantity of given compound

Answer 2

Molecular mass of CaCO3=100

So no of moles = mass/molecular mass

=1/100=0.01

So no of moles is equal to 0.01

No of atoms = no of moles× Avagadro no.

0.01×6.022×10²³