Question

scientists sometimes want to show whether more energy is used or released during a chemical process. they do this by adding the word energy to the chemical equation. if more energy is used than is released during a chemical process, \energy\ should appear on the same side of the equation as the reactants. if more energy is released than is used, \energy\ should appear on the same side of the equation as the products. the energy used in photosynthesis is light energy, which is captured by pigments in plant cells called chlorophyll. which of the following balanced chemical equations accurately summarizes photosynthesis? 6co₂ + 6h₂o + light energy → c₆h₁₂o₆ + 6o₂ 6co₂ + 6h₂o → c₆h₁₂o₆ + 6o₂ + light energy

Explanation:

Step1: Recall energy - use in photosynthesis

Photosynthesis uses light energy. According to the rule, energy used should be on the reactant side.

Step2: Analyze the two equations

In the equation $6CO_2 + 6H_2O+\text{light energy}\to C_6H_{12}O_6 + 6O_2$, light energy is on the reactant side. In the equation $6CO_2 + 6H_2O\to C_6H_{12}O_6 + 6O_2+\text{light energy}$, light energy is on the product side.

Answer:

$6CO_2 + 6H_2O+\text{light energy}\to C_6H_{12}O_6 + 6O_2$