+ 3H2O
+ light → C3H6O3 + 3O2

What amount and substance balance this reaction?

3CO2

Explanation:

__+ 3H2O + light → C3H6O3 + 3O2

The above equation is simply a reversed of Combustion of hydrocarbon. From the studies of hydrocarbon, we understood that when a hydrocarbon under go Combustion (burning) it will produce CO2 and H20. To get the missing compound in the above equation, let us react the product together. This is illustrated below:

C3H6O3 + 3O2 —> 3CO2 + 3H2O

Now let us invert the equation above. This gives:

3CO2 + 3H2O —> C3H6O3 + 3O2 so we can see that the missing compound is 3CO2

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."