(Answered) 1 combustion of 523 mg of phenol yields 1467 mg co2 and 301

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1. Combustion of 5.23 mg of phenol yields 14.67 mg CO2 and 3.01 mg H2O. Phenol contains C, H, and O. What is the percentage of each element in this substance? What is the empirical formula?

2. An oxide of osmium is a pale yellow solid. If 2.86g of the compound contains 2.16g of osmium what is the empirical formula?

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