NCERT In-Text Page 27 Q1 - Atoms and Molecules
Question: In a reaction, 5.3 g of sodium carbonate reacted with 6 g of acetic 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.
Answer: Both reactant and product masses are 11.3 g, proving the law of conservation of mass.
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