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Direction: Two class students of class 9th, Aashi and Sheena, were asked to take 5.3 g of sodium carbonate and 6 g of ethanoic acid to make 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Aashi followed the instructions but Sheena took the chemicals without measuring their amounts.
Q. Which law does this agreements shows?
- a)Law of Constant Proportion
- b)Law of Conservation of mass
- c)Dalton’s atomic theory
- d)Avogadro’s Law
Correct answer is option 'B'. Can you explain this answer?
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Direction: Two class students of class 9th, Aashi and Sheena, were as...
5.3 g + 6 g → 2.2g + 0.9 g + 8.2 g 11.3 g → 11.3 g
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This agreement shows the “Law of Conservation of mass”.
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Direction: Two class students of class 9th, Aashi and Sheena, were as...
Law of Conservation of Mass:
The law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction. In other words, the total mass of the reactants must be equal to the total mass of the products.
Explanation:
In the given scenario, Aashi and Sheena were asked to react sodium carbonate (Na2CO3) and ethanoic acid (CH3COOH) to produce carbon dioxide (CO2), water (H2O), and sodium ethanoate (CH3COONa). The masses of the reactants and products were measured.
Aashi followed the instructions and measured the exact amounts of sodium carbonate and ethanoic acid as 5.3 g and 6 g respectively. As a result, she obtained 2.2 g of carbon dioxide, 0.9 g of water, and 8.2 g of sodium ethanoate.
On the other hand, Sheena did not measure the amounts of the chemicals and simply took them without any measurement. Despite this, the masses of the products formed (2.2 g of carbon dioxide, 0.9 g of water, and 8.2 g of sodium ethanoate) were the same as those obtained by Aashi.
This observation demonstrates the law of conservation of mass. According to this law, the total mass of the reactants (sodium carbonate and ethanoic acid) must be equal to the total mass of the products (carbon dioxide, water, and sodium ethanoate) in a chemical reaction. In this case, the total mass of the reactants (5.3 g + 6 g = 11.3 g) is equal to the total mass of the products (2.2 g + 0.9 g + 8.2 g = 11.3 g).
Therefore, the agreement between the measured masses of the reactants and products, despite the lack of measurement by Sheena, supports the law of conservation of mass.
The law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction. In other words, the total mass of the reactants must be equal to the total mass of the products.
Explanation:
In the given scenario, Aashi and Sheena were asked to react sodium carbonate (Na2CO3) and ethanoic acid (CH3COOH) to produce carbon dioxide (CO2), water (H2O), and sodium ethanoate (CH3COONa). The masses of the reactants and products were measured.
Aashi followed the instructions and measured the exact amounts of sodium carbonate and ethanoic acid as 5.3 g and 6 g respectively. As a result, she obtained 2.2 g of carbon dioxide, 0.9 g of water, and 8.2 g of sodium ethanoate.
On the other hand, Sheena did not measure the amounts of the chemicals and simply took them without any measurement. Despite this, the masses of the products formed (2.2 g of carbon dioxide, 0.9 g of water, and 8.2 g of sodium ethanoate) were the same as those obtained by Aashi.
This observation demonstrates the law of conservation of mass. According to this law, the total mass of the reactants (sodium carbonate and ethanoic acid) must be equal to the total mass of the products (carbon dioxide, water, and sodium ethanoate) in a chemical reaction. In this case, the total mass of the reactants (5.3 g + 6 g = 11.3 g) is equal to the total mass of the products (2.2 g + 0.9 g + 8.2 g = 11.3 g).
Therefore, the agreement between the measured masses of the reactants and products, despite the lack of measurement by Sheena, supports the law of conservation of mass.
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Direction: Two class students of class 9th, Aashi and Sheena, were asked to take 5.3 g of sodium carbonate and 6 g of ethanoic acid to make 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Aashi followed the instructions but Sheena took the chemicals without measuring their amounts.Q. Which law does this agreements shows?a)Law of Constant Proportionb)Law of Conservation of massc)Dalton’s atomic theoryd)Avogadro’s LawCorrect answer is option 'B'. Can you explain this answer?
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Direction: Two class students of class 9th, Aashi and Sheena, were asked to take 5.3 g of sodium carbonate and 6 g of ethanoic acid to make 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Aashi followed the instructions but Sheena took the chemicals without measuring their amounts.Q. Which law does this agreements shows?a)Law of Constant Proportionb)Law of Conservation of massc)Dalton’s atomic theoryd)Avogadro’s LawCorrect answer is option 'B'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: Two class students of class 9th, Aashi and Sheena, were asked to take 5.3 g of sodium carbonate and 6 g of ethanoic acid to make 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Aashi followed the instructions but Sheena took the chemicals without measuring their amounts.Q. Which law does this agreements shows?a)Law of Constant Proportionb)Law of Conservation of massc)Dalton’s atomic theoryd)Avogadro’s LawCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: Two class students of class 9th, Aashi and Sheena, were asked to take 5.3 g of sodium carbonate and 6 g of ethanoic acid to make 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Aashi followed the instructions but Sheena took the chemicals without measuring their amounts.Q. Which law does this agreements shows?a)Law of Constant Proportionb)Law of Conservation of massc)Dalton’s atomic theoryd)Avogadro’s LawCorrect answer is option 'B'. Can you explain this answer?.
Direction: Two class students of class 9th, Aashi and Sheena, were asked to take 5.3 g of sodium carbonate and 6 g of ethanoic acid to make 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Aashi followed the instructions but Sheena took the chemicals without measuring their amounts.Q. Which law does this agreements shows?a)Law of Constant Proportionb)Law of Conservation of massc)Dalton’s atomic theoryd)Avogadro’s LawCorrect answer is option 'B'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: Two class students of class 9th, Aashi and Sheena, were asked to take 5.3 g of sodium carbonate and 6 g of ethanoic acid to make 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Aashi followed the instructions but Sheena took the chemicals without measuring their amounts.Q. Which law does this agreements shows?a)Law of Constant Proportionb)Law of Conservation of massc)Dalton’s atomic theoryd)Avogadro’s LawCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: Two class students of class 9th, Aashi and Sheena, were asked to take 5.3 g of sodium carbonate and 6 g of ethanoic acid to make 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Aashi followed the instructions but Sheena took the chemicals without measuring their amounts.Q. Which law does this agreements shows?a)Law of Constant Proportionb)Law of Conservation of massc)Dalton’s atomic theoryd)Avogadro’s LawCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Direction: Two class students of class 9th, Aashi and Sheena, were asked to take 5.3 g of sodium carbonate and 6 g of ethanoic acid to make 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Aashi followed the instructions but Sheena took the chemicals without measuring their amounts.Q. Which law does this agreements shows?a)Law of Constant Proportionb)Law of Conservation of massc)Dalton’s atomic theoryd)Avogadro’s LawCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
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ample number of questions to practice Direction: Two class students of class 9th, Aashi and Sheena, were asked to take 5.3 g of sodium carbonate and 6 g of ethanoic acid to make 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium ethanoate. Aashi followed the instructions but Sheena took the chemicals without measuring their amounts.Q. Which law does this agreements shows?a)Law of Constant Proportionb)Law of Conservation of massc)Dalton’s atomic theoryd)Avogadro’s LawCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 9 tests.
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