Question

v ---> CaO+CO2)vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

Answer 1

CaCO₃ ----> CaO + CO₂
 если опр. начальное вещество, то так

Answer 2

It seems like you've entered a chemical equation or reaction. This equation appears to represent the thermal decomposition of calcium carbonate (CaCO3) into calcium oxide (CaO) and carbon dioxide (CO2). The arrow (--) indicates the direction of the reaction, with reactants on the left side and products on the right side. The "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv" part doesn't have any specific meaning in a chemical equation. If you have any specific questions or need further information about this reaction, please feel free to ask.