In an experiment to measure the vapor pressure of methanol, the following data
were obtained:
$$\begin{array}{lll}
\text { Mass of empty device } & 2.6460 \mathrm{g} & \mathrm{P}_{\text {bur
}}=749 \mathrm{mm} \mathrm{Hg} \\
\text { Mass full of methanol } & 3.2035 \mathrm{g} & t=23.0^{\circ}
\mathrm{C} \\
\text { Mass after adding } 0.200 \mathrm{mL} \text { air } & 3.0170
\mathrm{g} & \text { density of methanol }=0.790 \mathrm{g} / \mathrm{mL} \\
\text { Bubble meniscus reading } & 0.132 \mathrm{mL} &
\end{array}$$
How many grams of methanol were in the full device? _____g
How many grams were driven out by the air? _____g
What is the volume of the methanol driven out? _____mL
What is the volume of the bubble? _____mL
Find the partial pressure of air in the bubble. (Note that the mass of air
remains the same, but it occupies a larger volume than \(0.200 \mathrm{mL}\)
since some vapor entered the bubble. Total \(P\) is \(749 \mathrm{mm}\) Hg.)
_____mm Hg
What is the partial pressure of vapor in the bubble? (This is the vapor
pressure of methanol at \(\left.23.0^{\circ} \mathrm{C} !\right)\) _____mm Hg
