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indrawboy

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CuCO₃ ⇒ CuO + CO₂

mol CuCO₃ = 7.41 g : Mr CuCO₃ = 7.41 : 123.55 g/mol = 0.06

mol CO₂ = mol CuCO₃ = 0.06

mass CO₂ = mol x Mr CO₂ = 0.06 x 44 g/mol = 2.64 g

Answer:

2.64g

Explanation:

The number of moles of CO2 formed is the same as the number of moles of CuCO3, because when one molecule of CuCO3 decomposes it produces one molecule of CO2. So start by working out the number of moles of CuCO3 in 7.41g.

Atomic mass values:

Cu = 63.5 g/mol

C = 12 g/mol

O = 16 g/mol

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