Question

When carbon an oxygen combine chemically, the mass of the product is....

Answer 1

Answer:The correct answer is option (2).

Explanation:

According to Law of Conservation of Mass , mass can neither be created nor be destroyed.

In a balanced chemical equation of reaction , the mass of the reactant is always equal to the mass of the products. As we can observe this law in the chemical reaction between carbon and oxygen.

$C+O_2\rightarrow CO_2$

Total mass of reactant = 12 g/mol + 32 g/mol = 44 g/mol

Total mass of products = (12 g/mol + 2 × (16 g/mol)) = 44 g/mol

Since,the law of conservation of mass is justified by the above reaction .Hence ,the correct answer is option (2).

Answer 2

It should be equal to the mass of the carbon plus the mass of the oxygen. This is because of the conservation of mass law. Mass is never created or destroyed only conserved. Hope this helped