Here's the problem:

N2 - 78.084%

O2 - 20.947%

Ar - 0.934%

CO2 - 0.0350%

What is the partial pressure (in atmospheres) due to the argon gas if the given pressure of the air today is 1.02 atmospheres?

How would I go about solving this problem? Do I need to change Argon into moles and then do something with atmospheres?

Desperately confused, can anyone help? Thank you!