Question

Which of the following equations demostrates the law of conservation of mass

A. Ch4+o2 arrow co2+h2o
B.CH+o2 arrow co2+h2o
C. CH4+ o2 arrow CO2+ H O
D. Ch4+o2 arrow C+2h2 O

Answer 1

The equation that demonstrates the law of conservation of mass is:

A. CH4 + O2 → CO2 + H2O

This equation represents the combustion of methane gas (CH4) in the presence of oxygen (O2) to produce carbon dioxide (CO2) and water (H2O).

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. In other words, the total mass of the reactants (CH4 and O2) must be equal to the total mass of the products (CO2 and H2O) in a balanced chemical equation.

In this equation, there is one carbon (C) atom on both sides, four hydrogen (H) atoms on both sides, and two oxygen (O) atoms on both sides. Therefore, the equation is balanced and follows the law of conservation of mass.

Step-by-step explanation:

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