Which symbol can be used to indicate a chemical reaction that takes place in the presence of a catalyst? mc032-1. Jpg mc032-2. Jpg mc032-3. Jpg mc032-4. Jpg.

The catalyst above the equals sign, with an arrow pointing from the equals to the catalyst.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates