Question

Q3. Two class IX students, kaveri and Nalin, were asked to take 5.3g of sodium
carbonate and 6 g of ethanoic acid to make 2.2g of carbon dioxide, 0.9g of water
and 8.2g of sodium ethanoale. Kaveri followed the Instructions but Nalin took the
chemicals without measuring their amounts.
(a) Whose activity do you think will be in agreement with the law of conservation
of mass?
(b) State the law of conservation of mass.
(c) Whose method do you like and why?
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Answer 1

Answer:

hey mate

Explanation:

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. 

5.3 g Na2 Co3 + 6 g  ethanoic acid = 2.2 g CO2 +0.9 H2O + 8.2 sodium ethonate 

L.H.S (Mass of reactants)

⇒ 5.3 + 6 = 11.3

R.H.S (Mass of products)

⇒ 2.2 + 0.9 +8.2= 11.3

⇒L.H.S = R.H.S

therefore these are in agreement by the law of conservation

hope its help mark as brainlist ;)