PDF chapter test TRY NOW

Answer the following questions:
  
1. What is meant by the term chemical formula?
 
The compound's chemical formula is a of its composition, e.g., the chemical formula of sodium chloride is .
  
2. How many atoms are present in a
 
(i). \(H_2S\) molecule .

(ii). \(PO_4{^-}{^3}\) ion .