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9 August, 16:12

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. 9 August, 17:12
    0
    CuCO₃ - - - T--> CuO↓ + CO₂ ↑

    CO₂ escapes to the atmosphere (it's a gas)
  2. 9 August, 19:21
    0
    It is so bcs of law of conservation of mass
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