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The Ideal Gas Law: Molar Mass

Q. If a 0.402 g sample of a gas maintains a pressure of 451 mm Hg when contained in a 1.00 L flask at 15.0°C, what is the gas's molecular weight? Given this molecular weight do think the gas is H2 (g), O2 (g), CO2 (g) or CH4 (g)? Explain your answer.

Solved • Apr 28, 2020

The Ideal Gas Law: Molar Mass

Q. If a 0.402 g sample of a gas maintains a pressure of 451 mm Hg when contained in a 1.00 L flask at 15.0°C, what is the gas's molecular weight?

Solved • Apr 28, 2020

The Ideal Gas Law: Molar Mass

Q. A 0.334 g sample of an unknown halogen occupies 109 mL at 398 K and 1.41 atm. What is the identity of the halogen? a) Ge b) Cl2 c) F2 d) Br2 e) I2

Solved • Apr 23, 2020

The Ideal Gas Law: Molar Mass

Q. A sample of a gaseous compound of nitrogen and oxygen weighs 5.25 g and occupies a volume of 1.00 L at a pressure of 1.26 atm and temperature of -4.0°C. Which of the following molecular formulas could be that of the compound? A. NO B. NO2 C. N3O6 D. N2O4 E. N2O5

Solved • Apr 3, 2020

The Ideal Gas Law: Molar Mass

Q. An unknown liquid is vaporized in a 273-ml flask by immersion in a water bath at 99°C. The barometric pressure is 753 torr. If the mass of the vapor retained in the flask is 1.362 g. what is its molar mass? A. 20.4 g/mol B. 40.9 g/mol C. 112 g/mol D. 154 g/mol E. 184 g/mol

Solved • Apr 1, 2020

The Ideal Gas Law: Molar Mass

Q. The mass of an evacuated 260 mL flask is 143.167 g. The mass of the flask filled with 272 torr of an unknown gas at 25 ∘C is 144.187 g. Calculate the molar mass of the unknown gas.

Solved • Mar 29, 2020

The Ideal Gas Law: Molar Mass

Q. An experiment shows that a 242 mL gas sample has a mass of 0.432 g at a pressure of 765 mmHg and a temperature of 38 ∘C. What is the molar mass of the gas?

Solved • Mar 28, 2020