A "shielding gas" mixture of argon and carbon dioxide is sometimes used in welding to improve the strength of the weld.If a gas cylinder of this two-part mixture was at 4.0 atm pressure and this mixture was 90.% argon,what would be the pressure due to the carbon dioxide gas component?

Question

Quizplus · Accepted Answer

Since the mixture is 90.% argon, we can assume that the remaining 10% is carbon dioxide. Therefore, the partial pressure of carbon dioxide can be calculated as follows:

(10/100) x 4.0 atm = 0.40 atm

So, the pressure due to the carbon dioxide gas component would be 0.40 atm.

A "Shielding Gas" Mixture of Argon and Carbon Dioxide Is