Problem: What is the molar mass of a gas if 0.0494 g of the gas occupies a volume of 0.100 L at a temperature 26 °C and a pressure of 307 torr?

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

FREE Expert Solution

The molar mass of a gas can be determined using the ideal gas equation. We have the pressure, volume, mass and temperature of the gas.


We know that: molar mass = g/mol. Since, we already have the mass of gas, we only need to calculate the number of moles to find its molar mass. We will use the ideal gas equation to calculate the number of moles.


Recall that the ideal gas equation is:


<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>P</mi><mi>V</mi><mo>&#xA0;</mo><mo>=</mo><mo>&#xA0;</mo><mi>n</mi><mi>R</mi><mi>T</mi></math>


  • We will first find the number of moles of gas
  • Then, we will calculate the molar mass using the given mass and number of moles.


Let’s first calculate the number of moles.


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Problem Details

What is the molar mass of a gas if 0.0494 g of the gas occupies a volume of 0.100 L at a temperature 26 °C and a pressure of 307 torr?

Frequently Asked Questions

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.

What professor is this problem relevant for?

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

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry - OpenStax 2015th Edition. You can also practice Chemistry - OpenStax 2015th Edition practice problems.