● Class 9th NCERT Science Solutions Chapterwise Chapter 03. Atoms and Molecules CHAPTER 03 solutions in english medium Best wishes by Nitish sir 🤞🤞 ------------------------------------------------------------------------------------- NCERT Solutions For Class 9 Science Chapter 3 Atoms and Molecules Page 27, 28 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 acetate. Show that these observations are in agreement with the law of conservation of mass carbonate. Answer: Question 2. Hydrogen and oxygen combine in the ratio of 1 : 8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas? Question 3. Which postulate of Dalton’s atomic theory is the re...