Is 2 KClO3 → 2 KCl + 3 O2 balanced?

yes it is balanced.

Explanation:

when you are balancing an equation you look at the elements or compounds on the reactants and product side, which must have the same number of elements on both sides. like the question above;

2 potassium on the reactant and product side.

2 chlorine on the reactant and product side.

6 oxygen on the reactant and product side.

away from the curb

explanation:

the wheels would then hit the curb if it started to rolling, decreasing the chance of an accident.

i think so it’s will be b yes i believe its