The total mass of the reactants is the total mass of the products in a chemical reaction

The answer is  d.  hydrogen 

B. water and sugaroh no! something went wrong while adding your answerit's too short. write at least 20 characters to explain it well.

Answer isno products will be formedyou need the required activation energy/good geometry  to be able to get a reaction going. (without favorable  geometry, more energy would be needed.)this is because molecules in a reaction have electrons surrounding them. as molecules approach one another, they start to slow down because of the like charge repulsion (electrons have a negative charge—like charges repel). the appropriate amount of energy is needed to overcome that mutual repulsion. without that amount of energy, the speed of the molecules will be slowed down to such an extent  they do not even collide; they end up rebounding from each other.

Ithink which aborts more energy is clorophyll b