Question about Ponderal Laws: Introduction
Subject Sciences
Sciences
Source Originais Teachy
Originais Teachy
Topic Ponderal Laws: Introduction
Ponderal Laws: Introduction
Difficulty Medium
Medium
(Originais Teachy 2024) - Question Medium of Sciences
Consider the following experiment: a closed container containing 15 grams of calcium carbonate (CaCO3) is heated, resulting in the decomposition of the compound into carbon dioxide (CO2) and calcium oxide (CaO). After a period of time, the system reaches thermal equilibrium and the formation of 6 grams of carbon dioxide is observed. Based on the Laws of Lavoisier and Proust, and knowledge of balancing chemical equations, answer the following questions: 1. Write the balanced chemical equation for the decomposition of calcium carbonate based on the information that 15 grams of the compound produce 6 grams of carbon dioxide and an unknown amount of calcium oxide. 2. Considering Lavoisier's Law, explain why it is important for the container to be closed and what can be inferred about the total mass of the system before and after the reaction. Also, explain how this information can be used to determine the mass of calcium oxide formed.Answer sheet:
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