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# Calculate the molar mass of geraniol

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1. The volatile organic compound geraniol, a component of oil of roses, is used in
perfumery. It was found that the density of the vapor at 260ºC is 0.480 g/L when
the pressure is 103 Torr. Calculate the molar mass of geraniol.

2. consider the following apparatus. Calculate the partial pressures of helium and neon after the stopcock is open. The temperature remains constant at 16 C.

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The volatile organic compound geraniol, a component of oil of roses, is used in
perfumery. It was found that the density of the vapor at 260ºC is 0.480 g/L when
the pressure is 103 Torr. Calculate the molar mass of geraniol.

Assume we have 1 L of the vapor at the above condition. then

Then the moles of the vapor is

The density is 0.480 g/L, so for 1 L vapor, the mass is 0.480 g.
Thus, the molar mass is

(a) Consider the following apparatus. Calculate the partial pressures of helium and
neon after the stopcock is open. The temperature remains constant at 16ºC.

we first calculate the moles of the Helium and Neon before the stopcock opens. According to ideal gas law,

For Helium

After the stopcock opens, the two molecules don't react with each other, so the moles remain the same. However, the volume will be ( 3.4 + 1.2) = 4.6 for both the gases. With the temperature remains constant, applying the ideal gas law:
Then, the partial pressure of neon is

The partial pressure of helium is

According to Dalton's law, the total pressure is

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

© BrainMass Inc. brainmass.com October 3, 2022, 2:08 am ad1c9bdddf>
https://brainmass.com/chemistry/physical-chemistry/calculate-molar-mass-geraniol-106832