Exercise Obtaining a Molecular Formula from Combustion Data:  One of the additives in unleaded gasoline that replaced tetraethyl lead in leaded gasoline is called MTBE. When 15.078 g MTBE is burned completely, 37.640 g CO2 and 18.489 g H2O form. In a separate experiment the molecular mass of MTBE is found to be 88.150. What is the molecular formula for MTBE?

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