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`        during an investigation acientist heated 2.76 g of silver carbonate till it decomposed to leave a silver residue. the total mass of the silver residue formed was 2.16 g. does the law of conservation of mass hold true in this case`
6 months ago

Khimraj
2722 Points
```							The equation that shows the decomposition of silver carbonate is as follows:2Ag2CO3 .........> 4Ag + 2CO2 + O2From the periodic table:mass of silver = 107.8682 gramsmass of carbon = 12 gramsmass of oxygen = 16 gramsmolar mass of Ag2CO3 = 2(107.8682) + 12 + 3(16) = 275.7364 gramsFrom the balanced equation above:2(275.7362) = 551.4728 grams of Ag2CO3 produces 4(107.8682) = 431.4728 grams of AgTherefore, to know the mass of Ag produced from 2.76 grams of Ag2CO3, we will simply use cross multiplication as follows:mass of Ag produced = (2.76*431.4728) / (551.4728) = 2.16 gramsBased on the above calculations, the law of conservation of mass is applied.
```
6 months ago
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