# 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.

🤓 Based on our data, we think this question is relevant for Professor Lyles' class at FAMU.

###### Problem Details

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.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Ideal Gas Law Molar Mass concept. If you need more Ideal Gas Law Molar Mass practice, you can also practice Ideal Gas Law Molar Mass practice problems.

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Our tutors rated the difficulty ofThe mass of an evacuated 255-mL flask is 143.187 g. The mass...as high difficulty.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Lyles' class at FAMU.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: A Molecular Approach - Tro 2nd Edition. You can also practice Chemistry: A Molecular Approach - Tro 2nd Edition practice problems.