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Question 1. In a reaction 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass carbonate. Answer. More Resources for CBSE Class 9 NCERT Solutions

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In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass. sodium carbonate + ethanoic acid. → sodium ethanoate + carbon dioxide + water.

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LiveLike. NCERT Book Class 9 Science Chapter 3 Atoms and molecules is here. This is the downloadable PDF format of Chapter 3 - Atoms and molecules from the NCERT Book for Class 9 Science (new 2023-24 version) from book whose name is Science. You can also use the NCERT Solutions available at oneedu24.com to solve questions of Atoms and molecules.

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Class- IX-CBSE-Science Atoms and Molecules. Practice more on Atoms and Molecules. Page - 1 . www.embibe.com. CBSE NCERT Solutions for Class 9 Science Chapter 3 . Back of Chapter Questions . 1. In a reaction, 5.3 g of sodium carbonate is reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium.

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Atoms and Molecules Class 9 Notes- This is the 3rd chapter of class 9th Science. Furthermore, in this chapter, we have learned that during a chemical reaction the mass of reactants and products remains unchanged. Moreover, this is known as the law of conservation of mass. Furthermore, the law of definite proportions states that in a pure.

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Science Class 9 Notes - Atoms and Molecules 1. Law of conservation of mass : This law was stated by Lavoisier in 1744. It states that "In all physical and chemical changes, the total mass of reactants is equal to total mass of products." 2. Law of constant proportions (or constant com -position) : This law was first stated by Proust in 1797.

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NCERT Books for Class 9 Science - Free PDF Available NCERT Class 9 Science Books are interesting for students preparing for final exams. It is also an important year, as in the next class they will have to take the board exams. Whatever the students study as per the CBSE Class 9 syllabus will lay the foundation for their Class 10 board exams.