Question

During the combustion of coal, the carbon in coal reacts with the oxygen in the atmosphere to form carbon dioxide. A, B, and C represent the masses of compounds either used up or formed by the combustion of coal.
A = 12 grams, B = 44 grams, C = 32 grams

Which of the following statements supports the conclusion that combustion of coal follows the law of conservation?
A.The total mass of A and C, which are carbon dioxide and oxygen, is equal to the mass of B, which is carbon.
B.The total mass of A and C, which are carbon and oxygen, is equal to the mass of B, which is carbon dioxide.
C.The total mass of B and C, which are carbon and oxygen, is greater than the mass of A, which is carbon dioxide.
D.The total mass of A and B, which are carbon and oxygen, is greater than the mass of C, which is carbon dioxide.
Thank you to whoever tries to answer this and I will give brainliest if your answer is right!

Edit: Nevermind! I did more research and for whoever is also trying to find the answer to this question the correct one is B.!

Answer 1

Answer: option B.The total mass of A and C, which are carbon and oxygen, is equal to the mass of B, which is carbon dioxide.


Explanation:

1) The combustion of carbon is represented by the chemical equation:

C + O₂ → CO₂

2)  The law of conservation of mass states that the mass of the products is equal to the mass of the reactants.

3)  The reactants are C and O₂, while the product is CO₂.

4) The masses given are: A: 12 g, B: 44 g, and C: 32 g

Then, 12g + 32 g = 44 g, this is A + C = B.

Then, B represents the product, which is CO₂, whose molar mass is 44 g/mol.

Since, the molar mass of C is 12 g/mol, it is A; and since the molar mass of O₂ is 32, it is C.

Therefore, the answer is the option B.

Answer 2

Answer: b i got it right

Explanation: