Assume that the mixture of substances in drawing (1)undergoes a chemical reaction.Which of the drawings (2)-(4)represents a product mixture that is consistent with the law of mass conservation?
A)drawing (2)
B)drawing (3)
C)drawing (4)

Question

Assume that the mixture of substances in drawing (1)undergoes a chemical reaction.Which of the drawings (2)-(4)represents a product mixture that is consistent with the law of mass conservation? 
A)drawing (2) 
B)drawing (3) 
C)drawing (4)

Quizplus · Accepted Answer

The law of mass conservation states that matter can neither be created nor destroyed in a chemical reaction, meaning that the total mass of the reactants must equal the total mass of the products. Drawing (2) shows the same number of atoms of each element before and after the reaction, indicating a conservation of mass. Drawing (3) shows more atoms of oxygen in the products than in the reactants, while drawing (4) shows fewer atoms of hydrogen in the products than in the reactants, both of which violate the law of mass conservation.

Assume That the Mixture of Substances in Drawing (1)undergoes a Chemical