Question

Compute the number of moles and molecules in
25 gm of CaCo3 and also calculate the
number of atoms each kind

Answer 1

Answer:

0.25 moles,15×10^22 molecules

Explanation:

No of moles= weight/gram molecular weight

=25/100 =0.25 moles

No of molecules=no of moles ×Avagadro number

=1/4×6×10^23

=1.5×10^23

15×10^22 molecules