### Determining Molar Mass Using the Dumas-Bulb TechniqueThe Dumas-bulb method is a classic technique for finding the molar mass of an unknown liquid. The procedure involves vaporizing the liquid sample, which boils at a temperature under 100°C, in a boiling-water bath. The aim is to ascertain the mass of vapor necessary to fill the bulb. For more details, refer to the illustration in **Figure 1**.#### Part ACalculate the molar mass of the unknown liquid using the data provided:- Mass of unknown vapor: 1.013 g- Volume of bulb: 355 cm³- Pressure: 742 torr- Temperature: 99°C**Equation:**\[ MM = \text{molar mass in g/mol} \]Enter your calculated molar mass and press "Submit" to verify your result or request an answer.**Note:** Utilize the provided equation editor and calculator functions to assist with your calculations.

Pressure (P) = 742 torr = 742/760 = 0.976 atm Temperature(T) = 99°c = 372 K Volume = 355 mL =…

Answered: ? g/mol

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

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Stoichiometry

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### Determining Molar Mass Using the Dumas-Bulb Technique

The Dumas-bulb method is a classic technique for finding the molar mass of an unknown liquid. The procedure involves vaporizing the liquid sample, which boils at a temperature under 100°C, in a boiling-water bath. The aim is to ascertain the mass of vapor necessary to fill the bulb. For more details, refer to the illustration in **Figure 1**.

#### Part A

Calculate the molar mass of the unknown liquid using the data provided:

- Mass of unknown vapor: 1.013 g
- Volume of bulb: 355 cm³
- Pressure: 742 torr
- Temperature: 99°C

**Equation:**
\[ MM = \text{molar mass in g/mol} \]

Enter your calculated molar mass and press "Submit" to verify your result or request an answer.

**Note:** Utilize the provided equation editor and calculator functions to assist with your calculations.

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