The mass of an evacuated 255-ml flask is 143.187 g. The mass of the flask filled with 267 torr of an unknown gas at 25 c is 143.289 g. calculate the molar mass of the unknown gas.
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Step 1
First, we need to convert the volume of the flask from milliliters to liters. 255 ml = 0.255 L. Show more…
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The mass of an evacuated 255-mL flask is 143.187 g. The mass of the flask filled with 267 torr of an unknown gas at 25 C is 143.289 g. Calculate the molar mass of the unknown gas.
Ronald P.
The mass of an evacuated 255 $\mathrm{mL}$ flask is 143.187 $\mathrm{g}$ . The mass of the flask filled with 267 torr of an unknown gas at $25^{\circ} \mathrm{C}$ is 143.289 $\mathrm{g} .$ Calculate the molar mass of the unknown gas.
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