Question

1. photosynthesis occurs by taking water from the soil, carbon dioxide from the air, and radiant energy from the sun to form glucose (c₆h₁₂o₆) and oxygen gas. what is the correct equation for photosynthesis as described in the previous statement? h₂o + o₂ -> c₆h₁₂o₆ + co₂ h₂o + co₂ + radiant energy -> c₆h₁₂o₆ + o₂ h₂o + co₂ -> c₆h₁₂o₆ + o₂ co₂ + o₂ + radiant energy -> c₆h₁₂o₆ + h₂o

Explanation:

Step1: Recall photosynthesis reactants and products

Photosynthesis uses water ($H_2O$), carbon - dioxide ($CO_2$) and radiant energy to produce glucose ($C_6H_{12}O_6$) and oxygen ($O_2$).

Step2: Analyze each option

Option 1: $H_2O + O_2
ightarrow C_6H_{12}O_6+CO_2$ has wrong reactants as oxygen is a product not a reactant in photosynthesis.
Option 2: $H_2O + CO_2+\text{radiant energy}
ightarrow C_6H_{12}O_6 + O_2$ is the correct equation as it has the correct reactants and products and includes radiant energy.
Option 3: $H_2O + CO_2
ightarrow C_6H_{12}O_6+O_2$ is missing radiant energy which is required for the reaction.
Option 4: $CO_2 + O_2+\text{radiant energy}
ightarrow C_6H_{12}O_6 + H_2O$ has wrong reactants as oxygen is a product and the reaction is not balanced in terms of reactants and products.

Answer:

$H_2O + CO_2+\text{radiant energy}
ightarrow C_6H_{12}O_6 + O_2$ (the second option)