Which of the following questions can NOT be addressed using the concept of chemical composition? (The book is Introductory Chemistry 5th edition)
1. What is the market price of iron in ore?
2.How many grams of sodium are consumed by a person in a day?
3. How much hydrogen can be extracted from water for energy?
4. What is the amount of chlorine in the chlorofluorocarbon freon-12 that is found in an air conditioner?