A Sample Ideal Gas Law Problem

Here is a sample ideal gas law problem.

A 2.78 L balloon holds helium at 1.28 atm and 38 oC. How many moles of helium are in the balloon?

We can recognize that this is NOT an IF problem, because there are no final conditions. So, in this case, we know the following:

pressure

1.28 atm

volume

2.78 L

amount

?

temperature

38 oC

If we decide to use the 0.0826 l atm/K mol value for R, we need to fix our temperature (convert it to Kelvin). This gives:

pressure

1.28 atm

volume

2.78 L

amount

?

temperature

311 K

Next step

About Us | Site Map | Privacy Policy | Contact Us | ©2009 Lawrence McAfoos