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28) A shielding gas mixture of argon and carbon dioxide is sometimes used in welding to improve the strength of the weld. If a gas
28) 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) 10. atm B) 3.6 atm C) 0.40 atm D) 4.0 atm dd beat? E) 86 atm
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