Problem: A 118-mL flask is evacuated and found to have a mass of 97.129 g. When the flask is filled with 768 torr of helium gas at 35 oC, it is found to have a mass of 97.171 g.Was the helium gas pure?

FREE Expert Solution

We are asked if the helium gas pure.


Calculate mass of gas: 

Mass gas = 97.171 g - 97.129 g = 0.042 g


View Complete Written Solution
Problem Details

A 118-mL flask is evacuated and found to have a mass of 97.129 g. When the flask is filled with 768 torr of helium gas at 35 oC, it is found to have a mass of 97.171 g.

Was the helium gas pure?

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.