How many moles of each of the following were in the, Ask an Expert

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A dry-cleaning solvent (molecular weight = 146.99 g/mol) that contains C, H, and Cl is suspected to be a cancer-causing agent. When a 0.275 g sample was studied by combustion analysis, 0.494 g of CO2 and 0.0668 g of H2O formed. How many moles of each of the following were in the original sample? What is the molecular formula?

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