8 Questions
What is the total mass of carbon dioxide when the atomic masses of carbon and oxygen (12 and 16, respectively) are multiplied?
The total mass of carbon dioxide is 44.
In the example of carbon combined with oxygen to form carbon dioxide, what is the balanced reaction?
The balanced reaction is 1 carbon + 2 oxygen -> carbon dioxide.
What is the Law of Conservation of Mass?
The Law of Conservation of Mass states that the mass of reactants equals the mass of products in a chemical reaction.
In the example of ethane (1.5g) undergoing complete combustion to produce 44g carbon dioxide and 2.7g water, what must be done to prove the Law of Conservation of Mass?
A reaction must be written and the mass balance verified.
The laws of chemical combination, specifically the Law of Conservation of Mass, will be ______.
studied
Discovered in the 1740s and 1780s, the Law of Conservation of Mass states that the mass of reactants equals the mass of products in a chemical ______.
reaction
Ethane (1.5g) example given, with complete combustion producing 44g carbon dioxide and 2.7g water, requiring proof of Law of Conservation of Mass ______.
application
To prove the reaction obeys the Law of Conservation of Mass, a reaction must be written and the mass balance ______.
verified
Study Notes
- Today's lesson in Class 11 chemistry focuses on the first chapter, covering basic concepts.
- Importance of chemistry, elements, mixtures, and significant uses will be discussed.
- The laws of chemical combination, specifically the Law of Conservation of Mass, will be studied.
- Discovered in the 1740s and 1780s, the Law of Conservation of Mass states that the mass of reactants equals the mass of products in a chemical reaction.
- No new laws will be added as these concepts are old.
- Carbon combined with oxygen is used as an example, resulting in carbon dioxide, with a balanced reaction of 1 carbon and 2 oxygen atoms.
- Atomic masses of carbon (12) and oxygen (16) are multiplied, resulting in a total mass of 44 for carbon dioxide.
- The sum of the mass of reactants (carbon and oxygen) equals the sum of the mass of products (carbon dioxide).
- Ethane (1.5g) example given, with complete combustion producing 44g carbon dioxide and 2.7g water, requiring proof of Law of Conservation of Mass application.
- To prove the reaction obeys the Law of Conservation of Mass, a reaction must be written and the mass balance verified.
Test your understanding of the first chapter in Class 11 chemistry, which covers basic concepts, the importance of chemistry, elements, mixtures, and significant uses. Specifically, the quiz delves into the laws of chemical combination, with a focus on the Law of Conservation of Mass, and includes examples of its application.
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