9. A 1.35 g sample of a substance containing carbon, hydrogen, nitrogen, and oxygen was burned to produce 0.810 g H2O and 1.32 g CO2. In a separate reaction, all the nitrogen in 0.735 g of the substance was converted to ammonia (NH3). This gave 0.284 g of NH3. Determine the empirical formula of the substance.

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**Problem 9: Determining the Empirical Formula**

A 1.35 g sample of a substance containing carbon, hydrogen, nitrogen, and oxygen was burned to produce 0.810 g of water (H₂O) and 1.32 g of carbon dioxide (CO₂). In a separate reaction, all the nitrogen in 0.735 g of the substance was converted to ammonia (NH₃), resulting in 0.284 g of NH₃. Determine the empirical formula of the substance.

**Analysis and Steps:**
1. Calculate the moles of each element (C, H, N, and O) based on the given masses of products.
2. Use the ratios derived from moles to determine the simplest whole-number ratio of atoms in the compound.
3. Establish the empirical formula based on these ratios.
Transcribed Image Text:**Problem 9: Determining the Empirical Formula** A 1.35 g sample of a substance containing carbon, hydrogen, nitrogen, and oxygen was burned to produce 0.810 g of water (H₂O) and 1.32 g of carbon dioxide (CO₂). In a separate reaction, all the nitrogen in 0.735 g of the substance was converted to ammonia (NH₃), resulting in 0.284 g of NH₃. Determine the empirical formula of the substance. **Analysis and Steps:** 1. Calculate the moles of each element (C, H, N, and O) based on the given masses of products. 2. Use the ratios derived from moles to determine the simplest whole-number ratio of atoms in the compound. 3. Establish the empirical formula based on these ratios.
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