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Use the vapour pressures (at 0 °C) of the pure substances below to answer the following...

Use the vapour pressures (at 0 °C) of the pure substances below to answer the following questions.

Substance P* (kPa)
1-bromo-2-methylpropane (C4H9Br) 2.58
1-iodopropane (C3H7I) 1.48





1. Determine the partial pressure (in kPa) of 1-iodopropane (C3H7I) in the vapour phase (at 0 °C) over a solution for which the mole fraction of 1-bromo-2-methylpropane (C4H9Br) is 0.427. Report your answer to three significant figures in scientific notation.

Tries 0/3





2. A solution of 1-bromo-2-methylpropane (C4H9Br) and 1-iodopropane (C3H7I) is prepared by adding 3.03 g of 1-bromo-2-methylpropane to 8.74 g of 1-iodopropane. Determine the mole fraction of 1-bromo-2-methylpropane in the vapor phase (at 0 °C). Report your answer to three significant figures in scientific notation.

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