which symbol can be used to indicate a chemical reaction that takes place in the presence of a catalyst?\n○…

which symbol can be used to indicate a chemical reaction that takes place in the presence of a catalyst?\n○ $xrightarrow{350^{circ}c}$\n○ $xrightarrow{pt}$\n○ $xrightarrow{0.5 atm}$\n○ $xrightarrow{\triangle}$

which symbol can be used to indicate a chemical reaction that takes place in the presence of a catalyst?\n○ $xrightarrow{350^{circ}c}$\n○ $xrightarrow{pt}$\n○ $xrightarrow{0.5 atm}$\n○ $xrightarrow{\triangle}$

Answer

Answer:

Pt

Brief Explanation:

In chemical reactions, the symbol of the catalyst (here Pt - platinum) is written above the arrow to indicate the reaction occurs in its presence. 350°C represents temperature, 0.5 atm represents pressure, and △ represents heat.