Wet CO2 want stainless steel material?

Because cs will corrode easily by Wet carbon di oxide and and its composite materials will oxidation with cs. So only We will use the SS material. SS material has high teperature high corrosiveness.

CO₂ dissolves in water to form carbonic acid, H₂CO₃. If you use CS, it will corrode very rapidly as a result. Using SS would make it far more corrosion resistant.

Which direction (composition or decomposition of urea) is your analysis?

In a dry decomposition analysis, it should not make a difference.

In a wet environment which includes the composition reaction below, the CO₂ will react with water (CO₂ + H₂O <-> H⁺ + HCO^-1).

CO_2(s) + 2NH_3(g) -> Urea ((NH₂)₂CO)+ H₂O

Carbon dioxide is an acid anhydride that forms a more (than water alone) corrosive solution (weak acid) in an aqueous environment. SS is less likely to corrode in this residual acidic environment.

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Good accuracy but lack of precision