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20 May, 13:07

In the thermal decomposition of copper carbonate, the black solid left behind weights less than the original copper carbonate. Why?

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Answers (2)
  1. 20 May, 13:26
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    CuCO₃ - - - T--> CuO↓ + CO₂ ↑

    CO₂ escapes to the atmosphere (it's a gas)
  2. 20 May, 13:34
    0
    It is so bcs of law of conservation of mass
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