Question

1. refer to your new equation.

co₂xrightarrow{light}c₆h₁₂o₆ + o₂
it now includes observations about biomass (glucose), carbon dioxide, light, and oxygen.
consider the glucose molecule: c₆h₁₂o₆
identify the element that is needed to build that molecule that is not already included on the reactants side of your chemical equation. then, infer which molecule could be used by plants to provide a source of hydrogen for the building of glucose (biomass).
element still required in the photosynthesis equation.
molecule that is a source of this element.

Explanation:

Step1: Analyze the elements in reactants and products

The reactant is \(CO_2\) (contains carbon and oxygen). The product \(C_6H_{12}O_6\) contains carbon, hydrogen, and oxygen. Since carbon and oxygen are already in the reactant (\(CO_2\)), the missing element is hydrogen (\(H\)).

Step2: Recall the photosynthesis process

In photosynthesis, the overall equation is \(6CO_2 + 6H_2O+light
ightarrow C_6H_{12}O_6 + 6O_2\). Water (\(H_2O\)) is a source of hydrogen for building glucose.

Answer:

Element still required in the photosynthesis equation: Hydrogen (\(H\))
Molecule that is a source of this element: Water (\(H_2O\))