Question

How many carbon dioxide molecules are needed to make a single glucose molecule?

Answer 1

You need 6 molecules of `"CO"_2`.

Explanation:

Glucose is `"C"_6"H"_12"O"_6`.

Remember the equation for photosynthesis:

`"6CO"_2 + "6H"_2"O" → "C"_6"H"_12"O"_6 + "6O"_2`