Question

1. students investigated photosynthesis in plants. they modeled the reaction using the equation below: light 6co₂+6h₂o → c₆h₁₂o₆+6o₂ which two statements best explain how this reaction demonstrates the law of conservation of mass? select two correct answers. energy from sunlight increases the mass of the products compared to the reactants. the reaction destroys some oxygen atoms while creating new carbon atoms. the atoms in the reactants are rearranged into new molecules, none are lost or created. the number of molecules increases after the reaction, which makes the products heavier.

Explanation:

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. In the photosynthesis reaction, atoms from reactants ($6CO_2 + 6H_2O$) are rearranged to form products ($C_6H_{12}O_6+6O_2$) without any loss or creation of atoms. Energy from sunlight is used for the reaction but does not contribute to an increase in mass of products compared to reactants. Atoms are conserved, not destroyed or newly - created. The number of molecules changing does not affect mass as long as atoms are conserved.

Answer:

The atoms in the reactants are rearranged into new molecules, none are lost or created.