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

question 14

Multiple Choice

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?

• A)3.6 atm
• B)0.40 atm
• C)10.atm
• D)4.0 atm
• E)none of the above

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