Question bank: Ponderal Laws: Introduction

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Question 1:

Hard

Consider a closed container initially containing 10 g of an unknown metallic oxide. This oxide is then reduced to pure metal by heating in the presence of 5 g of solid carbon. After heating, it is observed that all the carbon reacts and the container contains 8 g of pure metal, while the rest of the container is filled with gases. Based on this experiment and the application of the Laws of Lavoisier and Proust, answer: (1) What is the mass of the oxide that was reduced to metal? (2) If the molar mass of the formed pure metal is 56 g/mol, what is the obtained metal?

Ponderal Laws: Introduction

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Question 2:

Easy

The ponderal laws are a set of principles created by Aristotle that refer to the relationships between the elements of an argument. These laws aim to identify the most important parts in any discourse or discussion so that they can be classified as valid or invalid. What are the two fundamental parts for this to happen?

Ponderal Laws: Introduction

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Question 3:

Medium

The Law of Lavoisier is a scientific law formulated by the French chemist Antoine Lavoisier in the 18th century. This law states that matter is neither created nor destroyed, it only transforms. According to this law, what happens to matter during a chemical reaction?

Ponderal Laws: Introduction

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Question 4:

Medium

Introduction to ponderal laws means the study of how matter behaves when subjected to the action of forces. This discipline was developed by Galileo Galilei, who was one of the greatest scientists in history. What were the three main laws that Galileo described?

Ponderal Laws: Introduction

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Question 5:

Easy

After a practical chemistry class, a group of students mixed 10 g of zinc (Zn) powder with 25 g of hydrogen sulfide (H2S) in another container. A reaction was observed, and at the end of the experiment, the container weighed 33 g. Based on the observations and knowledge of the ponderal laws of Lavoisier and Proust, answer: (1) What is the product formed in the reaction between zinc and hydrogen sulfide? (2) How does the total mass observed in the container before and after the reaction confirm Lavoisier's Law of Conservation of Mass?

Ponderal Laws: Introduction

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