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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

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

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

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

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

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

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