Question

Which of the following statements best proves that the law of conservation of mass is obeyed during photosynthesis?

A: The starting total number of oxygen atoms in carbon dioxide is equal to the ending total number of oxygen atoms in glucose.
B: The starting total number of oxygen atoms in carbon dioxide gas is equal to the ending total number of oxygen atoms in glucose and oxygen.
C: The total mass of glucose and oxygen formed from photosynthesis is equal to the total mass of carbon dioxide and water used up during the reaction.
D: The total mass of glucose and carbon dioxide formed from photosynthesis is equal to the total mass of oxygen and water used up during the reaction.

Answer 1

D hope you enjoy :D .....................................

Answer 2

Answer: C: The total mass of glucose and oxygen formed from photosynthesis is equal to the total mass of carbon dioxide and water used up during the reaction.

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

Photosynthesis is a phenomenon in which green plants containing chlorophyll use sunlight as a source of energy to convert carbon dioxide and water to form glucose and oxygen.

`6CO_2+6H_2O\overset{sunlight}\rightarrow C_6H_(12)O_6+6O_2`