Essay Question 1 - Phosphoric acid (H3PO4) is used in detergents, fertilizers, toothpastes and flavoring in carbonated beverages

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• Essay Question 1 - Phosphoric acid (H₃PO₄) is used in detergents, fertilizers, toothpastes and flavoring in carbonated beverages. Calculate the percent composition of H₃PO₄. Ensure all work is shown.
• Essay Question 2 - Caffeine contains by mass 49.5% C, 5.15% H, 28.9% N and 16.5% O, and the molecular mass is 195g/mol. What are the empirical and molecular formulas of caffeine?  Ensure all work is shown.