PDF chapter test TRY NOW

Answer the following question in a few sentences:
  
State the number of atoms present in each of the following chemical species
 
(a). Number of atoms present \(CO_3{^2}{^-}\) is .
 
(b). Number of atoms present \(PO_4{^3}{^-}\) is .
 
(c). Number of atoms present \(P_2O_5\) is .
 
(d). Number of atoms present \(CO\) is .