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In a reaction 5.3 g of sodium carbonate ...

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

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Sodium carbonate +Ethanoic acid `to` Sodium ethanoate + carbon dioxide +water
The total mass of reactants =5.3+6=11.3 g
the total mass of products=2.2+0.9+8.2=11.3 g
`therefore` Total mass of reactants =Total mass of products
So these observations are in agreement with law of conservation of mass.
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