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The osmotic pressure of a solution containing 2.10 g of an unknown
compound dissolved in 175.0 mL of solution at 25 °C
is 1.93 atm. The combustion of 24.02 g of the unknown
compound produced 28.16 g CO2 and 8.64 g H2O. What is the
molecular formula of the compound (which contains only
carbon, hydrogen, and oxygen)?