Which of the following always results from a chemical reaction according to the Law of Conservation of Mass?

Which of the following best represents the law of conservation of mass in a chemical reaction?

According to the Law of Conservation of Mass, which quantity or quantities must always be the same on both sides of a balanced chemical equation?

Which statement best explains the relationship between the law of conservation of mass and the process of balancing chemical equations?

Why does the law of conservation of mass require that chemical equations be balanced?

Which of the following statements best describes the law of conservation of mass?

Which statement best describes the conservation of mass in a chemical equation?

According to the law of conservation of mass, if 32.0 g of oxygen gas reacts completely with methane (CH4) to produce carbon dioxide and water, what mass of methane is required for the reaction: CH4 + 2 O2 → CO2 + 2 H2O?

Which statement best explains why the law of conservation of mass is more relevant to chemical changes than to physical changes?