A hydrocarbon has a mass percent composition of 88.80% carbon and 11.20% hydrogen. When a sample of this hydrocarbon with a mass

Question

A hydrocarbon has a mass percent composition of 88.80% carbon and 11.20% hydrogen.
When a sample of this hydrocarbon with a mass of 14.78 g is vaporized in a sealed container with a volume of 4.00 L and heated to 120.0°C, the pressure in the flask is 223 kPa.
(a) Determine the empirical formula of the compound. [3A]
(b) Determine the molar mass of the compound. [2A]
(c) Determine the molecular formula of the compound. [2A]

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