Chemistry Practice Problems Ideal Gas Law Molar Mass Practice Problems Solution: The mass of an evacuated 255-mL flask is 143.187 g...

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# Solution: 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.

###### Problem

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.

Ideal Gas Law Molar Mass

Ideal Gas Law Molar Mass

#### Q. An unknown gas contained in a 1.85 L flask is weighed and found to have a mass of 15.87 g at a pressure of 2.45 atm and a temperature of 18.6°C. What ...

Solved • Wed Aug 24 2016 12:37:27 GMT-0400 (EDT)

Ideal Gas Law Molar Mass

#### Q. A gaseous hydrogen and carbon containing compound is decomposed and found to contain 85.63% C and 14.37% H by mass. The mass of 258 mL of the gas, mea...

Solved • Fri Jun 03 2016 14:55:10 GMT-0400 (EDT)

Ideal Gas Law Molar Mass

#### Q. A sample of gas has a mass of 0.555 g. Its volume is 117 ml at a temperature of 85 °C and a pressure of 753 mmHg. Find the molar mass of the gas.

Solved • Fri Jun 03 2016 11:46:40 GMT-0400 (EDT)

Ideal Gas Law Molar Mass

#### Q. An experiment shows that a 113-mL gas sample has a mass of 0.171 g at a pressure of 721 mmHg and a temperature of 32°C. What is the molar mass of the ...

Solved • Fri Jun 03 2016 11:43:05 GMT-0400 (EDT)