A second sample weighing 078 is also burnt and 0878 grams, Ask an Expert

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A second sample weighing 0.78 is also burnt and 0.878 grams of water is collected. In addition, the molecular weight is about 60 g/mole. A sample of unknown material containing C, H, and O is analyzed to calculate the molecular weight. A 1.25 gram sample is burnt and forms 1.72 grams of carbon dioxide. What is the molecular formula?

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