A 51.0-mL sample of a gas at 745 torr and 25 C has a mass of 0.262

Question:

A 51.0-mL sample of a gas at 745 torr and 25 °C has a mass of 0.262 g. The entire gas sample dissolves in 12.0 g water, forming a solution that freezes at -0.61 °C.

(a) Calculate the molar mass of the gas using the ideal gas law.

(b) Calculate the molar mass from the freezing point of the solution, using the data in Table 12.4.

Table 12.4

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Chemistry Principles And Practice

ISBN: 9780534420123

3rd Edition

Authors: Daniel L. Reger, Scott R. Goode, David W. Ball

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Question Posted: Jan 04, 2024 12:58 AM

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A 51.0-mL sample of a gas at 745 torr and 25 C has a mass of 0.262

Question:

TABLE 12.4 Boiling-Point Increases and Freezing-Point Depression Constants for Solvents kb (C/m) 3.07 2.53 Solvent Acetic acid Benzene Naphthalene Water Boiling Point (C) 117.90 80.10 100.00 0.512 Freezing Point (C) 16.60 5.51 80.2 0.00 k (C/m) 3.90 4.90 6.8 1.86

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a 128 gmol b 67 gmol c T...View the full answer

Chemistry Principles And Practice

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